Answer:
The correct answer is D.) genetic drift
Explanation:
Genetic drift refers to a population's unpredictable oscillations in the number of gene variants. When the occurrence of various forms of a gene, known as alleles, increases and decreases by chance over time, this is known as genetic drift. The changes in allele frequencies are used to measure these differences in allele presence. I hope this helps! ^-^
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.
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!
Make me as Brainliat.
why is my but red i need to know
Answer:
did you poop to hard did someone smack it there's many questions XD
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
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.
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.
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(:
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
In a food chain, which of the following is an organism that eats only other animals?
A: Primary consumer
B: Primary Prodcuer
C: Tertiary consumer
Answer:
c
Explanation:
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
what type of thermal energy is steam
Answer:
effect on?? not 100% sure
Explanation:
Steam is a capacious reservoir for thermal energy because of water's high heat of vaporization.
Which of the following is a natural resource for humans?
O Cars
O Electricity
O Houses
O Wood
Answer:
wood
Explanation:
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
Pls mark as brainliest and follow me
Have a great day!
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.
https://brainly.com/question/14592663
#SPJ6
I WILL GIVE BRAINLYEST ASAP
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
Help me with this question pleasee!!!!
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.
hope it helps you
have a great day!
regards
The aperture diameter (distance from side to side) of the opening of the telescope in millimeters. This is the area that lets light in. This telescope has a 18 mm aperture. Telescopes have a limit to how much useful magnification you can get, and this depends on the size of the aperture. Past that limit, and the image begins to break down, so it is not recommended to magnify higher than this amount. In general, the maximum useful magnification is 1.97x for every millimeter of aperture. Based on the size of the telescope’s aperture, what is the maximum useful magnification for this telescope?
Answer:
D. 35x
Explanation:
Given: For every millimeter of aperture, the maximum useful magnification = 1.97x
Aperture = 18 mm
Thus, the maximum useful magnification = 1.97 × 18 = 35.46
= 35x
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.
Answer and I will give you brainiliest
Please heeeeeeelp
Biology
Answer:
Absence of a nucleus
Explanation:
In eukaryotic cells, DNA is typically harvested and saved in the nucleus, though prokaryotic cells lack a nucleus, so the DNA merely floats in the cytoplasm instead.
The so-called Livestock Evolution involves increased consumption of animal products in developing countries.
O True
O False
How soon did the experimental group experience an improvement in lung function as measured by predicted FEV?
time taken to experience improvement:
How long was the improvement sustained?
duration of improvement:
By the end of the study, what was the absolute improvement of the experimental group relative to baseline?
Based on lung function tests, high FEV1 values indicates good lung function whereas low FEV1 values indicates impaired lung function.
What is lung function test?Lung function tests or pulmonary function tests are noninvasive tests performed to test how well the lungs are functioning.
The lung's primary function in gaseous exchange.
Thus, lung function tests determine how well the lungs perform gaseous exchange.
One parameter of lung function is Forced expiratory volume, FEV1.
Forced expiratory volume calculates the amount of air that a person can force out of their lungs in 1 second.
High FEV1 values indicates good lung function whereas low FEV1 values indicates impaired lung function.
Learn more about lung function at: https://brainly.com/question/13315890
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.
hope this helps
have an awesome day -TJ
may I please have brainliest if this helps you
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
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.
which one protein makes ?
a) Ribosomes
b) mitochondria
c) nucleus
d) chloroplasts
Answer:
a. ribosomes
Explanation:
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:
Can someone please help <3
Answer:
Explanation:
find the letter and go in the path the wheel helps you
Earth's crust moves due
eruptions of magma.
convection currents in the mantle.
the inner core acting like a magnet.
the spinning of Earth.
hello help me with this question thanks in advance
don't spam
[tex]\bold{\huge{\underline{ Answer }}}[/tex]
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.