The Answer is B. The only difference between plant and animal cells are that plant cells contain chloroplasts to make chlorophyll, as well as a cell wall.
Acute exposure to high altitude can affect the cardiovascular system by decreasing oxygen in the blood (acute hypoxia). It also increases demand on the heart, adrenaline release and pulmonary artery pressures.
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Flu- like symptons and then no symptoms. i think im not so sure