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Elanso [62]
3 years ago
10

Which of these is an environmental effect of building dams?

Biology
2 answers:
vampirchik [111]3 years ago
7 0

The question is B soil erosion upstream

never [62]3 years ago
6 0

Answer:

The answer is weed growth downstream  

Explanation:

 I did the test

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Question 13
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Explanation:

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In a step by step format, write about the process of the blood flow as it enters the heart until it leaves the heart. It should
lyudmila [28]

Answer:

Blood enter the right atrium of the heart via the vena cava (superior and inferior)

The right atrium contracts to push the blood into the right ventricle through the triscupid valve

The contraction of the right ventricle pushes the blood through the pulmonary valve to the pulmonary artery which carries it to the lungs to be oxygenated

After oxygenation, the pulmonary vein brings blood to the left atrium

Contraction of the left atrium pushes the blood through the mitral valve into the left ventricle

The left ventricle contracts to push the blood through the aortic valve, into the aorta, which carries the blood through the body.

Explanation:

4 0
3 years ago
Read 2 more answers
At the beginning every heartbeat the heart is what?
PSYCHO15rus [73]

Answer:

The heart is a pump, usually beating about 60 to 100 times per minute. With each heartbeat, the heart sends blood throughout our bodies, carrying oxygen ... It sends out an electrical signal to start the contracting (pumping) of the heart muscle.

Explanation:

6 0
3 years ago
For number 4, why is C. the correct answer. it’s due tomorrow please help
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