Answer:
In animals, the process of respiration is aerobic respiration, exchange of gases takes place ( carbon dioxide leaving the cell, oxygen entering)
Single cellular organisms can exchange gases directly across their cell membrane through the process o diffusion.
Large animals cannot maintain gas exchange by diffusion across their outer surface. A respiratory surface is covered with thin, moist epithelial cells that allow oxygen and carbon dioxide to exchange. Those gases can only cross cell membranes when they are dissolved in water or an aqueous solution, thus respiratory surfaces must be moist.
Explanation:
Explanation:
leave is the base of the verb to leave left is the past simple and the past participle form of the verb it used in the pasta simple verb tense and the present perfect verb tense you learn how to use this structures in the lesson
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Answer:
Vegetation def is: growing plants, or a life without physical, mental or social activity
Vegetative depends on the context. Mainly just means without brain activity