Answer:
No
Explanation:
Corals are not skeletons of polymors .
They are made of calcium carbonate.Which has chemical formula CaCO3Answer:
A. Yes
Explanation:
Yes, corals are made of thousands of polyps. Each polyp has a hard outer skeleton. They attach together to form corals.
Which of the following are examples of seed dispersal? Choose three answers that apply.
A. a wolf picks up burrs on its fur
B. a crow eats blackberries from a bush
C. a gardener cuts tulips for a bouquet
D. a wave carries a coconut out to sea
The following are examples of seed dispersal: A crow eats blackberries from a bush, a wave carries a coconut out to sea, and a wolf picks up burrs on its fur that are preset in options A, B, and D.
What is seed dispersal?Seed dispersal is the movement of seeds from the parent plant to a new location, and this can be done by many, such as when a crow eats blackberries from a bush; that is an example of endo zoochory, where animals consume the fruits or berries of a plant and the seeds pass through their digestive system. A wave that carries a coconut out to sea is an example of hydrochory, where seeds or fruits are dispersed by water, and a wolf that picks up burrs on its fur is an example of epizoochory and in these ways seed dispersal occurs.
Hence, examples are A crow eats blackberries from a bush, a wave carries a coconut out to sea, and a wolf picks up burrs on its fur that are preset in options A, B, and D.
Learn more about the seed dispersal process here.
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Can someone please help <3
Answer:
Explanation:
find the letter and go in the path the wheel helps you
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Which of the following is an example of climate?
A. The polar regions have long winters and short, cool summers.
B. Humidity levels are high today.
C. Canada experienced an unusually warm summer this year.
D. Tornados formed across Oklahoma yesterday.
Answer:
A
Explanation:
The polar regions have long winters and short, cool summers BC of climate change and extra warmth. :))
Answer:
A
Explanation:
Its talking about what they had overall in that region
What makes your blood flow?
Answer:
The antioxidants, nitrates, vitamins and other substances contained in the foods above can have a positive impact on your circulation. What's more, leading a healthy lifestyle by abstaining from smoking, staying active, maintaining a healthy weight and eating a well-rounded diet can boost blood flow and overall health.
Explanation:
Hope it helps you!
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Can convection take place in the water if it is heated at the top?
Answer: If the heating is done on one small area on the top, there will be convection. If the heating is restricted to a small fraction of the heating area, then within that area the heating will go deeper than anywhere else on the surface. Then the unheated area will have a shallower region of high temperature. Then some convection will occur in the deeper layers, causing some motion on top.
This happens quite a bit during welding. Convection is very significant in welding, even when the heating is from the top.
Explanation: Hope this helps. I did copy it from another website so if ur going to use it make sure to reword it:)
The part of the cell that act like your skin is the
A.membrane
B.protoplasm
C.nucleus
D.nerve
PLEASE HELP MEEE
Answer:
A
Explanation: The membrane acts like a shield for the cell to keep it safe. A plant cell has a cell membrane AND a cell wall but an animal cell ONLY has a cell membrane. It also filters what can go in and out of the cell. Hope this helps(:
PLEASE HELP WITH THIS
Answer:
Its C) DNA produces messenger RNA, also called mRNA.
Could I have brainliest..
Explanation:
Answer:
Its c)
Explanation:
DNA produces messenger RNA.
Earth's crust moves due
eruptions of magma.
convection currents in the mantle.
the inner core acting like a magnet.
the spinning of Earth.
2. What is an example of something studied on the molecular level (as opposed to the atomic level)?
hydrogen
oxygen
water
protons
Answer:
Something studied on the molecular level is the water.
Explanation:
Water is a molecule formed by two hydrogen atoms and one oxygen atom, whose chemical representation is H₂O. It is a molecule whose polarity makes it a universal solvent of other polar molecules.
The molecular level corresponds to the level of organization where two or more atoms unite to form molecules or substances, united by chemical bonds. H₂O is studied at this level due to its chemical structure.
With respect to other options:
Hydrogen and oxygen are atoms, and correspond to the level of atomic organization.Protons are particles that are part of an atom, and correspond to the subatomic level.What do we call a genetic cross that follows two separate characters, such as pea seed color and pea seed shape?
Answer:
Dihybrid cross
Explanation:
Whereas a monohybrid cross is a cross between two organisms that differ in a single trait, a dihybrid cross follows two traits.
It describes a mating experiment in which the phenotypes of two genes are followed through to the offspring in order to study the inheritance at those genes
How do the different types of receptors help you sense your environment?
Answer:
gg
Explanation:
Answer:
by developing a nerve impulse.
Explanation:
It detects changes in the internal or external environment by developing a nerve impulse. The different types of sensory receptors that respond to a specific type of stimuli are: Mechanoreceptors: The mechanoreceptors respond to forces and movements.
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Renewable resources are those resources which are inexhaustible in nature . It means these resourses are present in unlimited quantity and are environment friendly.
Geothermal energy is one of the example of renewable resources.
In geothermal energy, The word ' geo' stands for earth. So ,It basically means the energy that is extracted from the earth.
Here are some uses for the utilisation of renewable geothermal energy.
Geothermal energy helps in generating electricity.The geothermal power plant extract the heat from geothermal reservoirs. Then, This extracted heat is transfer to the heat engine .Which are responsible for running the heat engine smoothly and generation of electricity.
Geothermal energy helps in heating greenhouse .The heat that is released from the underground reservoirs are used to reduce green house gases because Geothermal energy needs very less CO2 . This heat is transfer in green house and it results into direct heating of green houses.
It also act as a tourist spotThere are so many people who wish to enjoy their leisure time peacefully. In winters, People like to visit the areas where hot spots are found .Which is a example of geothermal energy.
Geothermal energy helps in heating and cooling buildingsThe warm water is taken from underground reservoirs and then converted into hear energy. Then this heat energy is transfer in the building by using geothemal pumps helps in generating heat in building in winter. This same process is also follows for cooling of building.
It is also used as industrial purposeGeothermal energy is also used in industries for cooking, pastuerizing milk etc.
Why is the third line of defense consider specific and adaptive
Answer:
The third line of defense is specific resistance. This system relies on antigens, which are specific substances found in foreign microbes. Most antigens are proteins that serve as the stimulus to produce an immune response. ... The activation of T-cells by a specific antigen is called cell-mediated immunity.
Hope this helps out
Explanation:
You are studying transplant rejection in a wild and genetically diverse population of mice. You have captured some of the mice for laboratory studies. You have four mice from a family. Mouse 1, mouse 2, and mouse 3 are littermates, thus they all share the same mother and father. Mouse 4 is the father of the other three mice. You transplant a small patch of skin from mouse 2 (the donor) onto mouse 1 (the recipient). There is a delayed inflammatory response and two weeks later the skin is necrotic due to transplant rejection. You decide to attempt another transplant. Which follow-up transplant is LEAST likely to be rejected?
a. skin from mouse 1
b. skin from mouse 2
c. skin from mouse 3
d. skin from mouse 4-incorrect
Answer:
b. skin from mouse 2
Explanation:
According to this question, a mice skin transplant is being conducted. Four mice labelled Mouse 1, Mouse 2, Mouse 3 and Mouse 4 are used for this experiment. A small patch of skin from mouse 2 (the donor) was transplanted onto mouse 1 (the recipient), however, it was eventually rejected by the recipient (mouse 1).
This transplant rejection is due to the fact that the recipient's immune system identifies the tansplanted skin as foreign, hence, begins to attack it, leading to the skin's necrosis or death. Based on this, the same transplant rejection will occur if skin patches from mouse 3 and 4 are used.
However, the immune system of mouse 1, which is the recipient, will identify skin patches from MOUSE 2 as less foreign than any other skin from other mice. This is because skin from that mouse has been used before, hence, the recipient's immune recognizes it when a follow-up transplant is conducted. This makes a follow-up transplant from MOUSE 2 be the least likely to be rejected.
Venoms and toxins are ____________ while others are components of ____________ or bacterial cell walls.
Answer:
free molecules; plasma membrane
Explanation:
-Venom are complex mixtures of molecules called "toxins"
-Plasma membrane is the membrane found in cells that separates the interior of the cell from the outside environment
which one protein makes ?
a) Ribosomes
b) mitochondria
c) nucleus
d) chloroplasts
Answer:
a. ribosomes
Explanation:
Which of the following is a natural resource for humans?
O Cars
O Electricity
O Houses
O Wood
Answer:
wood
Explanation:
Explain the mechanism maintaining osmotic gradient in renal medullary intestitium
In the inner medulla, urea recirculates, creating a greater osmotic gradient. It follows the concentration gradient formed by ADH-sensitive water reabsorption into the interstitial space from the collecting duct. The remaining water is drawn from the descending structures by increased interstitial osmolarity.
To maintain the vertical osmotic gradient, the blood supply to the renal medulla serves as a countercurrent exchanger. - The medullary vertical osmotic gradient is maintained by the vasa recta.
It enhances both water and urea permeability in the inner medullary collecting ducts, allowing urea to diffuse passively down its concentration gradient into the interstitial fluid. This contributes to the osmotic gradient and aids water absorption.
Help me
Earth and space
Answer:
Most natural resources, including fossil fuels, are not distributed evenly around the Earth
So,your answer is unevenly distributed
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what are two chemicals used in testing for protein other
Answer:
Biuret solution is used to identify the presence of protein. Biuret reagent is a blue solution that, when it reacts with protein, will change color to pink-purple. Sugar with Benedict's solution. Protein with Biuret solution.Aug 10, 2020
Answer:
Biuret solution
Explanation:
Biuret solution is used to identify the presence of protein. Biuret reagent is a blue solution that, when it reacts with protein, will change color to pink-purple. Sugar with Benedict's solution. Protein with Biuret solution
Which of the following is not a way populations are described?
A. number of individuals that make up the population
B. number of individuals of the same species in an area
C. group of organisms of the same species, living in the same area at the exact same time
D.the place where the organisms live
Answer:
D
Explanation:
it is answer d
as it talks about the habitat
Predict: What ideas do you have about why Christchurch's air temperature is cooler during El Niño years?
Answer: ~Y/n here~ I believe this is your answer!
(Hope this helps!!)
Explanation:
In El Niño years, the prevailing winds that normally drive a warm current from the Equator past New Zealand are disrupted and may stop or even reverse.
why is my but red i need to know
Answer:
did you poop to hard did someone smack it there's many questions XD
Amyotrophic lateral sclerosis (ALS) is the most common motor neuron disease affecting adults (~30,000 in U.S.). It is a progressive, debilitating neuromuscular disorder that generally strikes in mid- to late-life (40-70 years) and can rapidly progress to death (3-5 years from onset). ALS is characterized by selective loss of motor neurons in spinal cord, which causes loss of skeletal muscle and weakness. Motor neurons in the largest motor units appear to be most vulnerable. Based on this, which type of motor neurons and muscle fibers would you expect to be most susceptible
Answer
Upper and Lower motor neurons, and Voluntary muscles.
Explanation:
Structurally,the motor neurons in the Brain are called the upper motor neurons.While the motor neurons in the spinal cord and the brain Nuclei are called the lower motor motor neurons.
Therefore, transmission of sensory impulses from the brain through the upper motor neuron are sent to the spinal cord through the lower motor neurons. These are eventually sent to the muscles(voluntary muscles) the effectors to bring response.
However, in ALS both the upper and lower motor neurons degenerate and die.Therefore transmission of action potential is impeded.Thus the voluntary muscles are made redundant with no sensory information and therefore they twitch (this is called fasciculations) and progressively undergo waste away.
As this progress the ability of the brain to initiate action potential for sensory information and its propagation is lost.
Therefore weakness of muscles and stiffness results,followed by complete loss of sensory transmission and inability of the individual to respond to sensory stimulus of walking, standing, eating, and breathing.Slurred and nasal speech,and muscles cramps are other symptoms
At advanced stage loss of life usually results from the respiratory failure.
it occurs mostly in the Caucasians and non-Hispanics between the age of 55-75,and common in males than females.It causes are blend of genetic and environmental factors.
Medication,therapy-physical and speech therapy are some means of treatments.
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Compare and contrast between seed plants and seedless plants:
Dominant generation:
Long distance of dispersal:
Answer:
seedless plants do not bear seeds for propagation, whereas seed plants bear seeds for multiplication.
Explanation:
The difference between seed plants and seedless plants is that seedless plants do not bear seeds for propagation, whereas seed plants bear seeds for multiplication. The plant kingdom is traditionally divided into four main divisions, i.e Thallophyta, Bryophyta, Pteridophyta and Spermatophyta
The sporophyte is the dominant generation, but multicellular male and female gametophytes are produced within the flowers of the sporophyte.
In many plants, the sporophyte generation is the dominant generation. This means that the sporophyte is larger and lives longer than the gametophyte generation.
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8.
What do you call the things in an experiment that must be the same to make it
fair?
A. Controlled variables
B. Dependent variables
C. Independent variables
D. Uncontrolled variables
Answer:
controlled variables
Explanation:
Controlled variables are ones that could affect the experiment, and the scientist keeps them the same to make it fair.
The so-called Livestock Evolution involves increased consumption of animal products in developing countries.
O True
O False
what are the three phases of action potential and explain
The action potential has three main stages: depolarization, repolarization, and hyperpolarization. Depolarization is caused when positively charged sodium ions rush into a neuron with the opening of voltage-gated sodium channels.
Which evolutionary adaptations helped plants succeed and spread on land?
vascular tissue and seeds
spores and pine cones
small size and small seeds
cotyledons and nonvascular tissue
Answer:
A
Explanation:
The evolutionary adaptations that helped plants succeed and spread on land are vascular tissue and seeds.
What is evolutionary adaptation of plants?This is the ability of plants to survive and thrive on land.
Plant adaptations to life on land is enhanced by the development of many structures such as;
A water-repellent cuticleStomata to regulate water evaporationSpecialized cells to provide rigid support against gravity, Specialized structures like chlorophyll to collect sunlightThus, the evolutionary adaptations that helped plants succeed and spread on land are vascular tissue and seeds.
Learn more about evolutionary adaptation of plants here: https://brainly.com/question/467368
what is ecology in biology
Answer:
Ecology basically is the learning of how differerent organisms link together or interact in the environment that they bodily live in.
Explanation: