Answer:
Environmental change
Explanation:
A species that has little genetic variation cannot evolve (change) in response to variable environmental conditions because genetic variation is the raw material on which natural selection operates to select individuals. Adaptation to changing environmental conditions only can occur when there is variation (either genetic or phenotypic variation). In consequence, a species with low genetic variation is at a high risk of extinction, especially in challenging environments.
describe one similarity and one difference between fungi and plants
Explanation:
Both the plant and fungus kingdoms have some common characteristics. ... While both are eukaryotic and don't move, plants are autotrophic - making their own energy - and have cell walls made of cellulose, but fungi are heterotrophic - taking in food for energy - and have cell walls made of chitin.
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What is the purpose of cellular respiration?
a
break down sugars to use their energy directly
b
capture energy from the sun and store it in sugars
c
break down sugars to create ATP
d
capture energy from the sun and store it in sugars
HELP DUE BY 10AM HELP ASAP
Answer:
A
Explanation:
Answer: A
Explanation:
Please help I’ll mark you as brainliest if correct
Answer:
Both are A
Explanation:
they are both correct good job
Which of the following does NOT occur during interphase?
1.each chromosome replicates
2.the nucleus disappears
3.microtubules extend from centrosomes
4.centrosomes are duplicated
Answer:
The nucleus disappears
Explanation:
The nucleus does not disappear in interphase but instead, the cell grows and splits to make another duplicate of the cell. Which means the cell will also split to make another duplicate nucleus.
What is a population bottleneck?
Answer:
A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events such as famines, earthquakes, floods, fires, disease, and droughts or human activities such as specicide and human population planning.
Explanation:
Explanation:
A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events such as famines, earthquakes, floods, fires, disease, and droughts or human activities such as specicide and human population planning.follow me
Can you answer what’s on this worksheet?
List the types of vascular tissue you see in this stem cross-section and describe what they do:
Please dont give me a link, they don't work for me
What is the speed of an animal that covers 60 miles in 1.5 hours
Answer:
40 mph
Explanation:
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PLAY
STOR
of science to answer the
10
The students want to see how changes to the design of the marble track will
affect the energy of the marbles.
(a)
As you respond to Part A, Part B, and Part C, follow the directions below.
estigate how the potential
he marbles move through
e different materials the
• Address all the instructions in each prompt.
• Use evidence from the information provided and your own knowledge of
science to support your responses.
Part A
One student wants to increase the potential energy of the marble at the starting
position. Explain one way the students can adjust the track to increase the
marble's potential energy. In your explanation,
• describe the dimensions of any materials used to adjust the track and
• explain why the adjustment to the track would increase the marble's
potential energy
Answer:
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what is vector in life sience
6. Looking at the chemical equation for anaerobic respiration in the Introduction portion
of this lab, what product of cellular respiration was the gas in the balloon?
NEED HELP
Answer:
Because carbon dioxide is a component of your breath, and when you exhale, you release it.
Carbon dioxide
How do you blow up a balloon? You might know that carbon dioxide is what we exhale into a balloon, but where does it come from? Carbon dioxide is a waste product from a process called cellular respiration, which uses oxygen and sugar to make energy and carbon dioxide.
What is carbon dioxide?Carbon dioxide (chemical formula CO2) is a chemical compound occurring as a colorless gas with a density about 53% higher than that of dry air. Carbon dioxide molecules consist of a carbon atom covalently double bonded to two oxygen atoms. It occurs naturally in Earth's atmosphere as a trace gas. The current concentration is about 0.04% (417 ppm) by volume, having risen from pre-industrial levels of 280 ppm. In water it forms an acidic solution due to the formation of carbonic acid (H2CO3). Natural sources include volcanoes, forest fires, hot springs, geysers, and it is freed from carbonate rocks by dissolution in water and acids. Because carbon dioxide is soluble in water, it occurs naturally in groundwater, rivers and lakes, ice caps, glaciers and seawater. It is present in deposits of petroleum and natural gas. Carbon dioxide has a sharp and acidic odor and generates the taste of soda water in the mouth, but at normally encountered concentrations it is odorless.
As the source of available carbon in the carbon cycle, atmospheric carbon dioxide is the primary carbon source for life on Earth and its concentration in Earth's pre-industrial atmosphere since late in the Precambrian has been regulated by photosynthetic organisms and geological phenomena. Plants, algae and cyanobacteria use energy from sunlight to synthesize carbohydrates from carbon dioxide and water in a process called photosynthesis, which produces oxygen as a waste product
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Question 10 of 23
Which characteristic makes a digital signal more useful than an analog signal
for storing information?
A. A digital signal includes a spectrum of colors.
B. A digital signal is ngore difficult to copy.
C. A digital signal cannot be heard by humans.
D. A digital signal moves between a discrete number of values.
SUBMIT
Answer:
D. A digital signal moves between a discrete number of values.
Explanation:
A-P-E-X
Which gland is enlarged in a young child and what is the main function of the hormone it secretes?
O A) Pineal – seasonality and salt resorption
B) Thyroid - metabolism
C) Thymus - immune system development
D) Pancreas - calcium storage
E) Adrenal – secondary sexual characteristics
Answer:
C
Explanation:
The thymus produces and secretes thymosin, a hormone necessary for T cell development and production. The thymus is special in that, unlike most organs, it is at its largest in children.
Answer:
The right answer is option C, thymus.
Thymus helps in immune system development. Its located behind sternum and helps in maturation of T lymphocytes.
What type of conservation will result in the greatest reduction in the burning of fossil fuels?
Answer:
Conservation of air.
Explanation:
Conservation of air will result due to greatest decrease in the burning of fossil fuels because fossil fuels greatly damage the air. The burning of fossil fuels produces carbondioxide gas in large amount that can be released in the atmosphere. This increase in carbondioxide gas in the air causes pollution that leads to global warming as well as health problems in humans. So we can conclude that decrease the use of fossil fuel leads to conservation of air.
critically discuss the transport mechanisms across the membrane
Diffusion, osmosis and active transport.
Explanation:
. Diffusion is the movement of substances from a region of high concentration to a region of low concentration across the membrane.
.Osmosis is the movement of water molecules from a hypotonic solution to a hypertonic solution across the membrane.
.Active transport is the movement of substances from a region of low concentration to a region of high concentration across the membrane with the utilization of energy.
Which of the following best describes an environmental advantage of urbanization?
А
Individuals living in cities have more varied employment opportunities than individuals living in rural areas.
B
Individuals living in cities have greater access to health care than individuals living in rural areas.
с
Individuals living in cities usually have greater access to fresh, local agricultural products than individuals living in rural areas.
D
Individuals living in cities usually have a lower transportation carbon footprint than individuals living in rural areas.
Individuals living in cities have more varied employment opportunities than
individuals living in rural areas is an environmental advantage of
urbanization.
Urbanization involves the increase in the industrialization thereby leading
to the increase in population to the area. Cities usually have a higher
degree of urbanization due to presence of various industries and access to
the best facilities.
The increase in industries during urbanization makes varied employment
opportunities present and an advantage over the rural areas.
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Water is carried from the roots upward to every part of a vascular plant by
cells walls.
O cuticle.
phloem.
xylem
Use the concept map below to answer the following question.
Do internet search enhance our knowledge in animal/fish raising?
Answer:
Yes it does because it helps us to be aware on the things that we should know on how to raise the animals with care,.
Explanation:
The reactions of glycolysis that are shared with those in gluconeogenesis (ie use the same enzymes) are those that: Are substrate level phosphorylations Are irreversible. Are regulated steps. Operate close to equilibrium. g
Answer:
The reactions of glycolysis that are shared with those in gluconeogenesis (ie use the same enzymes) are those that Are regulated steps.
Explanation:
Glycolisis and gluconeogenesis are two mechanisms related to the carbohydrates metabolism. Sometimes they are considered reverse processes. However, they are different because of the control points they have where reactions are irreversible.
Glycolisis and gluconeogenesis share 7 common reactions, that are reversible. Thses reactions are coordinated and regulated by F-2 and 6-BP as the answer to the hormonal action.
Glycolisis happens in the muscle, while Gluconeogenesis happens in the liver. Together they form the "Cori Cycle".
Which gene may play a role in patterning the forelimb?
Answer: Posterior HoxA and HoxD genes play important roles in patterning along the proximodistal axis of the forelimb (10–13). They also are required for activating and maintaining Shh expression in the developing forelimb (6, 7). mark brainliest
Explanation:
a heavily populated town with a housing shortage is located near one large river the water in the river is not heavily polluted the people grow food on fertile farms near the river there is no access to vaccinations in the area and the death rate from certain diseases is very high based on this the most immediate solution
Answer:
Answer: access to medical supplies
Explanation:
Answer:
access to medical supplies
Explanation:
CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION
Answer:
D
Explanation:
Happy Days to you!
The codons are carried to a ______ where the colde is translated into a sequence of amino acids
Answer:
Ribosome
Explanation:
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PLEASE HELP TAKING TEST NOW!!!!!!!!!!!! What are ethical and aesthetic services? (1 point)
the material benefits that humans receive from ecosystems
o the products that humans obtain from the ecosystem that they can use
o the contributions of ecosystems that benefit human survival and well-being
the nonmaterial benefits that humans receive from ecosystems
Our crops depend on insect pollination and the complex biological processes that create soil. We benefit from parks, natural environments, and animals when we do so because it improves our health and wellbeing.
What advantages can the environment provide us in our day-to-day activities?As a society, we rely on healthy ecosystems for a number of purposes, such as crop pollination to ensure that we won't go hungry, air purification so that we can breathe easily, carbon sequestration to control the climate, nutrient cycling so that we can access clean drinking water without having to invest in pricey infrastructure, and so on.
Healthy ecosystems keep our soil in good condition, purify the air, regulate the climate, recycle nutrients, and provide us with food.
learn more about ecosystems
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dsadasd das sad afsasdasdsa?
I am sorry what?????
what language is this?
Mutations that change the bases in a base pair are ____________.
Answer:
A point mutation is when a single base pair is altered. Point mutations can have one of three effects. First, the base substitution can be a silent mutation where the altered codon corresponds to the same amino acid.
Explanation:
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Question 20 of 34
Which situation shows a nonrenewable resource in use?
A. Solar energy reaches Earth's surface.
B. Sunflowers grow from sunflower seeds.
O c. Computer chips are made from silicon.
D. Lobsters are caught off the coast of Maine.
Answer:
c. Computer chips are made from silicon.
Explanation:
Non-renewable resources are natural substances that cannot be easily replenished when used. Examples are natural gas, coal, oil, nuclear energy, etc. Silicon is made when Silica is heated with carbon after which the product is reacted with hydrocarbons to polymerize them. Since the hydrocarbons are made from oil and natural gas, the resulting product is non-renewable.
Chips made from silicon are not biodegradable because to reuse them, they must be sent to companies that have specialty in renewing them.
 Which would be worse a change in DNA or a change in mRNA & why
Answer:
i think its DNA
Explanation:
im not sure
The blue is my guess