The introduction of Caulerpa, also known as killer algae, into California was ultimately the result of _______.
a.
hull fouling
b.
the aquarium trade in exotic, nonnative aquatic species
c.
intentional release
d.
an algae farming company

Answers

Answer 1

Answer: A

Explanation: Hull Fouling

Answer 2

The introduction of Caulerpa, also known as killer algae, into California was ultimately the result of the aquarium trade in exotic, nonnative aquatic species. The correct option is b.

What is exotic species?

Exotic species are those that have been introduced, either intentionally or unintentionally, by humans into an ecosystem where they did not evolve. Such introductions are most likely a natural occurrence.

Endemic species are those that are found only in one region and nowhere else on the planet.

Invasive species have the potential to extirpate native plants and animals, reduce biodiversity, compete with native organisms for limited resources, and alter habitats.

This has the potential to have significant economic consequences as well as fundamental disruptions to the coastal and Great Lakes ecosystems.

Caulerpa, also known as killer algae, was introduced into California as a result of the aquarium trade in exotic, nonnative aquatic species.

Thus, the correct option is b.

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Related Questions

plz answer ASAP will get ten points ​

Answers

Answer:

the 2nd and 4th

Explanation:

they contain more than one molecule due to them being different elements

2 and 4 ones because the person above me said so lol

Break question


what pets would you want




(p.s. could you please answer one of my questions)​

Answers

mmm I really want a dog! thank u for this!
i really want a cat and i might get one

Meiosis is part of the cell cycle.

Answers

Answer:False

Explanation:Mitosis

Swimmers ear is a fungal infection that occurs where ?

Answers

Answer:

Ear canal

Explanation:

Which one of the following statements is wrong with respect to separation of DNA fragments on gel electrophoresis?
4 points
a. Gel electrophoresis is employed to check the progression of a restriction enzyme digestion.
b. The DNA fragments move towards cathode under electric field through the matrix.
c. The smaller DNA fragments moves farther.
d. The commonly used matrix is agarose gel.​

Answers

Answer:

b. The DNA fragments move towards cathode under electric field through the matrix.

Explanation:

Gel electrophoresis is a molecular biology technique used to separate DNA fragments based on size using electric current. The electric current passes through a GEL (agarose gel is commonly used) matrix. Due to the fact that DNA is negatively charged, they tend to move towards a positively charged electrode called ANODE.

However, the smaller the size of the DNA fragment, the faster and farther it moves along the matrix. Gel electrophoresis is indeed a technique used to check how progressive a restriction enzyme has been able to digest DNA molecule into fragments.

Demonstrate how 200 different cells came from a single fertilized ovum ?​

Answers

Answer:

Humans are not that different from other animals, but vary in the finer detail.

Indeed most amniotes (terrestrial organisms with fetuses surrounded by membrane) work pretty well along the same principles, and there’s also much in common as far back as you want to go, really, on land or in water.

And my next semi-random thought is to say that cellular differentiation, like real estate (apparently), is all about location, location, location. Where the cells are, or where they came from, seems to matter a lot.

Actually, it’s more about layers. Like an onion. Or a cake. (I can’t believe I’m writing this, and apologies to any Shrek fans out there.)

What I mean to say is that some understanding of developmental embryology will help here. To simplify things enormously, our adult cell types ultimately arise from embryonic stem cells. These stem cells are multi-purpose and programmable, or pluripotent in a sense, and capable of making whatever type or form of cell is requested. They just need to be “told” what to do. And just tiny bits of code do exactly that, flipping switches on or off as required, based on cues like orientation, chemical gradients, and proximity.

Now a quick read of the links above will explain it all, but I’ll press on anyway. Out of that initial programming arises our ‘germ layers’, the mesoderm, the ectoderm and the endoderm. We are, after all, triploblastic. 3 layers, get it?

But you knew that.

In case you didn’t, these layers in effect give you a scaffold or more accurately perhaps a tube comprising an inside, outside, and a middle. Where your cells are hanging out in that tube matters, in that they pick up on their location and auto-magically become functionally relevant to that space. In a sense, I mean. Refer back to location, location, location.

Just knowing that pattern of proximity, gradients, and orientation more than simply sets the scene. Whether you work forwards or backwards from there, you will hopefully see that these “germ layers” derive quite simply from a much earlier differentiation, and then complexify. In that sense you have your answer - a complex set of diverse cell types arises by differentiation from an earlier, simpler differentiation. Which sounds a bit clunky when I write it out, but it gives a general idea.

So how does this complicated process happen?

Well, as I mentioned chemical gradients are probably to blame here. And it actually starts before fertilisation, in that the egg itself is already semi-structured and bathed in chemicals with a high-low gradient of some sort. In that sense it’s giving cellular differentiation a head start (there’s a pun there), by setting up some sort of polarity from the beginning. At the very least we get some ends happening, or a top and a bottom if you like.

Now, again simplifying things enormously, your average fertilised egg, or zygote, has by definition a complete set of your DNA ready and waiting, which contains the code for every protein-making gene, plus transcription factors, plus whatever else gets copied for various reasons, including those we haven’t teased out as yet.

Note that those transcription factors really matter. We may have around 20,000 protein-expressing genes, but we also have some 1,500 transcription factors that seem to switch the genes on, off, or arguably and effectively somewhere in between. Well, they work in combination and by that we get a huge amount of variation in expression, and thus our cellular diversity as well.

And all of that DNA goodness is sitting in that zygote, bathed in chemicals that may vary very slightly from top to bottom and side to side as it were, by concentration and by other traits, like temperature. Several such things interact, including orientation and proximity to neighbours, but let’s assert (based on experiments) that the gradient is important, and that it continues to guide the “differentiation” process as new cells are born.

Which is to say that by this process of reading the DNA and expressing only the genes that are switched on by the helpful and gradient-sensitive (say) transcription factors, we get set up to form those 3-D axes and the scaffolding that will guide our cellular replication strategy. Which then produces a result that with each round of replication becomes subtly different and more diverse. Over time the subtlety gives way to more recognisable layers and specialisation in function.

Perhaps not the neatest, clearest explanation but the quickest and least baffling one I can come up with right now. As always, read the links to get a better grasp.

Answer:

During the development of an organism, cells differentiate into many distinct cell types. How does a single fertilized egg cell develop into so many different types of specialized cells? ... They both cannot produce all cells. Multipotent- limited to replacing cells in the tissue where they are found.

What was going on in the last 250 years that is thought to have a significant impact
on the carbon dioxide levels in the atmosphere

A. Industrial revolution
B. Forest fires
C. humans evolved
D. Middle Ages

Answers

Answer:

A

Explanation:

How did the crickets lose their ability to chirp?

Answers

Answer:

By a mutation that altered the shape of their wings, making them incapable of producing the chirping noise. The feat was achieved over less than 20 generations, a mere evolutionary blink of an eye, and, with the crickets living just a few weeks, a very rapid process.

Explanation:

Answer:

The change seems to have been caused by a mutation that altered the shape of their wings.

Explanation:

Makes them incapable of producing the chirping noise. The feat was achieved over less than 20 generations, a mere evolutionary blink of an eye, and, with the crickets living just a few weeks, a very rapid process.

By which process do plants try to avoid
self-pollination?

A. The plant dies to avoid this.

B. The plant detaches the male part of the plant from
itself.

C. They attract pollinators.

D. They have no control over this process of self-
pollination.

Answers

Answer:

it's C. They attract pollinators

The hormone insulin is secreted by the pancreas. Which activity is MOST likely to
trigger an increase in the levels of insulin circulating in the blood?
O A. driving
B. eating
O C. jogging
OD. sleeping

Answers

Answer:

Eating

Hope this helps! <3

Which one of the following would increase the amount of ground shaking produced by an earthquake?
a. being far away from the epicenter
b. building to code
c. having a deep focus
d. loose ground material

Answers

Answer:

think it's A but not sure

12. Which of the methods of generating electricity does NOT use alternative energy
resources?
a. Burning coal in a power plant
b. Turbines spinning in dam
c. Solar panels taking in light energy
d. Drilling wells to reach hot rocks deep inside the earth

Answers

Answer:

i think its A. burning coal in a power plant

Explanation:

sorry if im wrong but please let me know if this is correct or not

The method of generating electricity that does not use alternative energy resources is burning coal in a power plant.

What are alternative energy resources?

Alternative energy resources are eco-friendly resources that can be used to produce energy.

These are renewable resources and can not be extinct.

These resources do not pollute the earth.

Examples are windmills, solar panels, hydropower, etc.

Thus, the correct option is a. Burn coal in a power plant.

Learn more about energy resources

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PLEASSEEE help me ASAP​

Answers

Answer:

Our of the cell

Explanation:

Please mark me as a Brainliest and follow for more answers

what are the the four main categories of organic macromolecules ?

Answers

Answer:

There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids), and each is an important component of the cell and performs a wide array of functions.

Four main categories of organic macromolecules are as follow:

carbohydratelipidsproteinsnucleic acidWhat are macromolecules?

Macromolecules are polymers containing long chains of molecular sub-units known as monomers. These play an important role in biophysical processes and composed of thousands of atoms that are covalently bonded.

Carbohydrate is a biomolecule having carbon, hydrogen and oxygen atom.It is the main source of energy of the body.

Lipids are macromolecules that are insoluble in water and the main function is to serve as structural component of cell membrane.

Proteins are macromolecules that are extremely complex in structure and made up of amino acid residues joined by peptide bonds.

Nucleic acids are biopolymer macromolecules and composed of nucleotide. The function is to carry genetic information which helps to make RNA.

Therefore,Four main categories of organic macromolecules are as follow:

carbohydratelipidsproteinsnucleic acid

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what is an ecosystem

Answers

An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system.
a biological community of interacting organisms and their physical environment.

Carbon dioxide in the atmosphere flows into and out of living things.
Which type of living things take carbon dioxide out of the atmosphere?

Select one:
A. all answer choices.
B. Plants
C. Animals
D. Fungi

Answers

The part of the plant that takes in carbon dioxide from the air for photosynthesis stomata.

What most likely caused a rock formation?

A. Wind erosion over many years

B. Erosion by waves over many years

C. The rock was chipped away by animals

D. High temperatures that melted the rock

Answers

i believe that it is D
B. Erosion by waves over many years

Which best represents a balanced equation

Answers

Answer:

option C is correct answer of this question

hope it helps

it is balanced equation

The example of a balanced chemical equation is 2H₂ + O₂ → 2H₂O. Thus, the correct option is C.

What is a balanced equation?

A chemical equation is the symbolic representation of the chemical reaction in the form of symbols and chemical formulas such as H₂O. Chemical equation are generally are unbalanced however, these reactions can be balanced.

Balancing a chemical equation refers to balancing the stoichiometric coefficients on both the reactants and products side of the reaction which is because the chemical equation must obey the law of conservation of mass of the atoms.

2H₂ + O₂ → 2H₂O

This reaction has 4 H and 2 O atoms.

Therefore, the correct option is C.

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Oompah’s with type O blood receive a tax break. ophine oompah has type a blood, but he wants a wife that will give him children with type o. what blood type should he request on his dating survey? what must Opine’s blood type be in order to produce offspring with type O blood?

Answers

Answer:

He should request type O on his dating survey.

Opine's blood type must be AO to have a higher probability of producing O offsprings.

Explanation:

O blood type is recessive so, when it is paired with another blood type like B or A, these would be dominant, giving B and A blood, respectively.

O blood type results are possible thanks to OO genotypes.

If the man's blood type is A, to have a higher chance of producing OO offsprings, his blood should be AO. The other possibility is that he has AA blood, which will result in a low probability of OO offsprings.

As regards the mother, her blood type should be OO.

We can see this more clearly in Punnet Square.

║ A ║O

O║AO║OO

O║AO║OO  

There is a 50% of probability of having O offsprings with AO and OO.

  ║ A ║A

O║AO║AO

O║AO║AO

With AA and OO, the probability is 0%

 ║ A ║O

A║AA║AO

O║AO║OO

With both parents having AO, blood the probability of having a OO offspring is 25%.

In conclusion, the higher chances of producing a OO offspring is if the parents are AO and OO.

PLZ HELP ME ASAP


Read the article above and answer the following questions


1. The cardiovascular system includes:

A. the heart

B. blood

C. blood vessels

D. all of the above


2. Which of the following is NOT carried through the body by blood?

A. valves

B. carbon dioxide

C. nutrients

D. oxygen


3. Which of the following carries blood out of the heart?

A. arteries

B. veins

C. blood vessels

D. tubes


4. Which of the following is NOT a part of blood?

A. red blood cells

B. white blood cells

C. gorta

D. plasma


5. What is the heart largely composed of?

A. plasma

B. platelets

C. muscle

D. both B and C

Answers

all of the above  cause the cardiovacular system help you move your blood

Answer:

1. all above

2. valves

3. arteries

4. gorta

5. muscle

Explanation:

3. This is the menstrual phase wherein pregnancy is poss
a) follicular phase
c) menstrual phase
b) luteal phase
d) ovulation phase
woman for pregnancy.​

Answers

Answer:

Insiso "d"... The ovary phase depends on the days after emnarazo.

Answer:

D ovulation phase.

Explanation:

2. Calculate the kinetic energy of a dodgeball that has a mass of 2 kg and velocity of 4 m/s after being thrown.
a. 32J
b. 64 J
c. 16 J
d. 8J

Answers

Answer:

c.16J

Explanation:

because kinetic energy =1/2mv²

1/2 ×2×4²=16J

plesss help I'm in die mode pless help​

Answers

Answer:

The fiberglass is the most affective at keeping the ice cream from melting.

Explanation:

The bolder dots are the fiber glass, and the line is not going up (melting), so it's the least melted.

List the 6 levels of organization and define each

Answers

molecule - they have a wide range of sizes and structures and perform a vast array of functions.

cell - consist of cytoplasm enclosed within a membrane, which contains many biomolecules such as proteins and nucleic acids

tissue - an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function

population - same species that live in a particular geographic area at the same time

organ system - organs that work together as a biological system to perform one or more functions

ecosystem - community of living organisms in conjunction with the nonliving components of their environment

PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!

Answers

Answer:

Relative Dating of rock layer

it’s the first answer, they can predict how long the earth has been here by examining the rock layers

PLZ HELP ASAP
MARKING

Answers

Answer

hi, your answer is steel

Explanation:

because a skyscraper wouldn't stand well in bad weather as cardboard everything would eventually get wet. it couldn't be rubber, bc rubber would make it fall down a little. Plastic is strong, but eventually it wears away. so, steel is your answer

Wrong answers only! What is the purpose of sampling water at the water treatment plant. PS IT HAS TO BE ABOUT THE TOPIC

Answers

the purpose is to taste test it obviously

amoeba sisters video recap genetic drift

Answers

Answer:

What language is this?...

What is the amino acid sequence that results from the original DNA sequence?

Answers

Explanation:

D

Use the chart. The first amino acid is AUG

AUG is found in the row A, column U, and AUG is the 4th letter in the box, the sequence for it is met.

Looking at the next 3, UGG

The code for that is trap sk it has to be d.

What is an amniotic egg?

Answers

Answer: The amniotic egg was an evolutionary invention that allowed the first reptiles to colonize dry land more than 300 million years ago. Fishes and amphibians must lay their eggs in water and therefore cannot live far from water. ... Within the chorion is the amnion, the membrane for which the amniotic egg is named.

Explanation:

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Create a free verse poem about life A small fish tank holds 12 pints of water. How many fluid ounces are in 3 small fish tanks? 57.6 fluid ounces 576 fluid ounces 5,766 fluid ounces 57,666 fluid ounces Great gatsby: which one of the characters are guilty of destroying the original American dream? Re-write the expression in radical form Conflict is avoided in social media because you can see what you really thinkTrue or false Match the mechanism to the most likely outcome for each column. One mechanism may be chosen more than once. Find the solution of the system of equations.4x+5y= 13x5y=-22 Can someone translate please? Fragmental Co. leased a portion of its store to another company for eight months beginning on October 1, at a monthly rate of $1,125. Fragmental collected the entire $9,000 cash on October 1 and recorded it as unearned revenue. Assuming adjusting entries are only made at year-end, the adjusting entry made by Fragmental Co. on December 31 would be: 1.) What event helped promote the New South and occured three times in Atlanta during the late 1800s?2.) The New South movement redefined Georgia's economy and pushed it to rely heavily on...A.) IndustryB.) CottonC.) AgricultureD.) All of the Above When drawing a vector, you should represent the magnitude of the vector by the length of the arrow. A. True O B. False HELP ME ASAPPP PLZZZZThe blueprint for an office building uses a scale of 2 cm.:3.5 m. The height of the actual office building is 259 m. What is the height of the office building on the blueprint? help me with this please ! Type your response in the box.Identify the purpose of the video and note the similarities between it and Twain's essay "Taming the Bicycle." What us a magnetic domain? I need help with this please, i need it fast who is the head of state in CanadaThe presidentThe prime ministerThe governor-GeneralThe monarch of the United Kingdom A new gaming system costs $350. A store offers a 20%discount on the new gaming system. What is the amount ofthe discount? SOMEBODY PLEASE HELP ME.Eric and Scott each through a javelin. The height of the javelin that Eric through can be modeled by the function f(x)=-16x^2+64x6 where f(x) represents the height in feet of the javelin after X seconds. The graph represents the height of Scots javelin as a function of time. Which statements are true?THE ANSWER CHOICES ARE IN THE PICTURE PLEASE ANSWER THIS QUESTION RIGHT Simplify: 6x4y^3.