Growth rate and metabolism are controlled by gland. thymus hypo thymus thyroid adrenal

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

3differences between bacteria and other 2 cells

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