Answer:
After leaving the heart, the red blood cell travels through the pulmonary artery to the lungs. There it picks up oxygen making the deoxygenated red blood cell now an oxygenated blood cell. The blood cell then makes it way back to the heart via the pulmonary vein into the left atrium.
Explanation:
second question answer yan
Answer:
The simplest definition of ecosystem is that it is a community or a group of living organisms interacting with each other and with non - living things.
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The correct answer for this would be C
hope that helps
I believe the anwser is c
