I think Earth’s atmosphere plus atmosphere. So, 23+48=71. So, the answer is A
Answer:
There are many characteristics of a mammal their hair and furs, young are fed by milk, and sweat glanced.
To have an overall positive or negative charge. (as opposed to neutral one)
Prairie Grass is the organism that provides energy to all other organisms in the ecosystem.
Answer:
True
Explanation:
Peristalsis is the wave-like motion of the walls of the alimentary canal that allow food to move along the lumen of the alimentary canal towards the posterior (anus). These waves are powered by the contraction and relaxation of the smooth muscles.
