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Wittaler [7]
2 years ago
10

Which of the following is a community?

Biology
2 answers:
Katyanochek1 [597]2 years ago
8 0
B. all of the living things that interact within a lake
Ainat [17]2 years ago
3 0

Answer:

B. All of the living things that interact within a lake

Explanation:

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A student wants to test the effect of nitrogen rich fertilizers on the growth of rose bushes. Which of the following is a variab
Alchen [17]
I believe the answer is the second one.
7 0
2 years ago
Which of the following would most likely be key to gathering evidence that the RNA World hypothesis is valid?
muminat

Answer:

The answer is; Simulation of early Earth conditions and long-term study of the resulting molecules

Explanation:

It is believed that the first molecules on earth were made spontaneously through reaction spurred by energy from lightning and also the heat from the earth. It is believed that these molecules over time then formed polymers through the catalysis by metals in the oceans. These polymers were able to self-replicate and also act as enzymes since they were able to fold up. This hypothesis was coined by Carl Woese, Francis Crick and Leslie Orgel in the 1960s. To prove it, the then conditions of early earth need to be replicated, data collected, and analyzed.

Read more on Brainly.com - brainly.com/question/2321489#readmore

5 0
3 years ago
Suggest appropriate sources of food to meet their requirements for a Newborn baby and child aged 6.
pashok25 [27]

Explanation:

Calcium . Helps build strong bones and teeth.

Fat. Creates energy, helps the brain develop, keeps skin and hair healthy, and protects against infections.

Folate. Helps cells divide.

Iron. Builds blood cells, and helps the brain develop. Breast-fed babies should receive iron supplements.

Protein and carbohydrates. They provide energy and fuel growth.

Zinc. Helps the cells grow and repair themselves

Your baby also needs vitamins such as:

Vitamin A. Keeps skin, hair, vision, and the immune system healthy.

Vitamin B1 (thiamine). Helps the body turn food into energy.

Vitamin B2 (riboflavin). Helps the body turn food into energy, and protects cells from damage.

Vitamin B3 (niacin). Helps the body turn food into energy and use fats and protein.

Vitamin B6. Keeps the brain and immune system healthy.

Vitamin B12. Keeps nerve and blood cells healthy, and makes DNA -- the genetic material in every cell.

Vitamin C. Protects against infections, builds bones and muscles, and helps wounds heal.

Vitamin D. Helps the body absorb calcium from food, and keeps bones and teeth healthy. Breast-fed babies may need a D supplement.

Vitamin E. Protects cells from damage, and strengthens the immune system.

Vitamin K. Helps the blood to clot.

hope this was helpful

8 0
3 years ago
Read 2 more answers
Which statement about the nervous system is true
bezimeni [28]
Incomplete question you must include the choices.

nervous system is the communication system of the body.
6 0
3 years ago
Read 2 more answers
Describe ways in which a healthy artery differs from an artery affected by coronary heart disease
JulsSmile [24]

Answer:

A healthy artery is wider and has no blockages. The lumen (which is the hole in the centre of the artery), is open and clear. This means there is more blood flow. An artery of a person suffering from coronary heart disease is often blocked, usually by a fatty deposit. This means the blood does not flow as well. (See diagram, in which I would draw two arteries, one with a blockage of fatty deposit, one clear and healthy).

hope this helped you

please mark as the brainliest (ㆁωㆁ)

3 0
3 years ago
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