If an animal is an ectotherm, it's has 1. a skeleton on the outside of its body 2. a skeleton on the inside of its body 3. a body that regulates its own internal temperature 4. a body that does not produce much internal heat

i believe the correct answer is d

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.