A. Wheat, corn, soybeans, and cabbage are the main four plants responsible for providing food to people in the world.
Cartilaginous fish conducts internal fertilization. Internal fertilization happens when the egg cell and sperm cells of the parents were fertilized inside the body of the parent. And the baby is developed over time.
In chemical digestion<span>, large molecules like proteins and starches are broken into simpler units that can be readily absorbed. </span>Digestive system<span>. ... The mouth, stomach, small intestine, and other </span>digestive system organs work<span> together to make digesting food and absorbing nutrients efficient.</span>
<span>In the past, human populations were controlled by </span>Disease and Famine
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