What are two things you would do to protect wetlands?

Imagine ? person stepping on a pin and pulling his or her foot way look at the réfléchir arc of the scenarios below

What is the difference between a scientific hypotheses and a scientific theory?

Which one is an advantage of external fertilization a. the offspring are genetically identical to the parents b. more eggs can be fertilzed at one time c. more sperm can be released at one time d. more protection is available for developing plz