If when the muscles around the prostate gland contract, sperm is propelled from the epidiymes, then what happens when muscles around the prostate gland contracts? Answer choices: - preventing heat transfer - The bending of a ray of light - Generating heat - Warm air moving into cold air - Sperm leaves the epidiymes - heat produced - Release energy - rapid expansion
Sperm leaves the epidiymes

If kidneys make up the excretory system, then kidneys are a part of what system? Answer choices: - allow growth - excretory - respiratory - organ - complex - storing water - endocrine - circulatory
excretory

If arthropods may live in large colonies and have complex social behaviors, then what kind of animal can live in large colonies and have complex behaviors? Answer choices: - arthropods - warm-blooded - birds - mammals - animals - honeybees - fur seals - fish
arthropods