Answer:
abiotic factors are factors that are not organ or biotic as one would say like the nevirmwnt or air or water biotic factors are things like tress food plants ect
Cells need energy for various purposes
Mouth, pharynx, esophagus
Superior vena cava- upper body inferior vena cava
lower body- bother drain into the right atrium
Answer:
this tree tells us that the amnion is found in mammals, lizards, snakes, crocodiles, and birds
Explanation:
