What societal change would likely cause a decrease in the birth rate?

Match the types of competition to their descriptions.

If a set of instructions that determines all of the charactersitics of an organism is comparedto a book, and a chromosme is compared to chaper in the book, then what might be compared to a paragraph in the book?

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.