The arm and hand of human, the paw of a cat, and the wing of a bat look similar when they are viewed in an x-ray. What do scientists conclude? Group of answer choices

A. Humans, cats and bats are all the same species.

B. Humans, cats and bats have a common ancestor.

C. Humans and cats evolved from bats.

D. Humans and cats can fly if they work hard enough to acquire that trait.

This organism is not capable of performing photosynthesis. (horseshoe crab) true false

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.

Match the reproductive structures based on their function and the system to which they belong. egg ovary sperm vas deferens vagina fallopian tube testis urethra