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Ainat [17]
3 years ago
14

Which of the following prevents blood from flowing backward through the circulatory system?

Biology
1 answer:
S_A_V [24]3 years ago
8 0

Answer: Valves in the veins

Explanation: The flow of the blood inside the body takes place through the veins and arteries. The oxygenated blood from the heart is supplied to the different parts of the body.

The blood flows from the capillaries to the venules and from there to the veins. The blood moves in the veins by the rhythmic movement of the smooth muscles in the body.

Most of the blood moves against the gravity so there is a chance that it can backflow so to prevent this there are valves in the veins known as one way valves.

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Answer:

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Invasive species are species that invade a ecosystem, and can harm other species and take over resources.

Populatiuons are what make up an ecosystem. There are many populations in a single ecosystem.

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And this is correct, for invasive species often times can cause extiction of species, or even whole ecosystems.

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This wont only kill off the pine trees, but harms and could potentiallu kill the species that depend on the pine trees for survival.

Answer: invasive speices.

Hope this helps!

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