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Natali [406]
2 years ago
5

How are valves in the circulatory system similar to sphincters in the digestive system?

Biology
1 answer:
malfutka [58]2 years ago
8 0

i think it should be d

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After a dye diffuses uniformly throughout a glass of water, the dye molecules are no longer moving. True or false?
Anton [14]
The answer is false, liquid molecules continue to move even after the concentration is uniform.

Diffusion happens because there’s a concentration gradient between the dye and the water, therefore dye molecules moves to the water area. But note that this is only the net movement of the molecules, which means, even if more molecules are moving towards water, there are still some dye molecules that are moving in the opposite direction.

So, after the concentration is equal, the motion of the dye molecules does not stop, they still move in random directions, but there’s no net movement instead, as there’s no concentration gradient. Remember molecules are always moving in all directions , it just depends on whether there’s a net movement or not. If there’s no net movement, the amount of molecules moving to each and every direction is always equal.
8 0
3 years ago
What is the answers for Q1 and Q2 here?
lorasvet [3.4K]
I think the answer for Q2 is D but i could be wrong. sorry if i am
4 0
3 years ago
Read 2 more answers
A population of trout in a lake has significantly declined over the past year. The main source of food for the fish in this lake
andrew11 [14]

The decline in the overall population of trout and larger fish is because the Insect population has decreased.

<h3>What is a population?</h3>

A population is a group of organisms of the same species living in the same habitat.

Population of organisms is affected by;

  • availability of water
  • space
  • food and nutrients
  • predators
  • climate change

Since the population of trout is directly affected by the number of insect species, the decline in the overall population is because the Insect population has decreased.

Learn more about population at: brainly.com/question/746835

3 0
2 years ago
Will somone pleas answer this
Wittaler [7]

Answer:

Main idea

Explanation:

3 0
3 years ago
Read 2 more answers
Which statement below is true of both chloroplasts and mitochondria?
MissTica

Answer:

Its either B or D but i think its B

Explanation:

i hope it B if not then its D

7 0
3 years ago
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