If caffeine excites the central nervous system, then what excites the central nervous system? Answer choices: - motion - competition - eating - learning - heat - caffeine - sweating - turkey
caffeine

(Question)
If aggression by predators causes porcupine to extend its quills, then what by predators cause porcupines to extend their quills? Answer choices: - hypothyroidism - killing insects - kisses - aggression - love - hyperthyroidism - kinetic energy - cohabitating
(Answer)
aggression

Ques: If toads have a relatively complex circulatory system with a three chambered heart, then what has a three chambered heart? Answer choices: - alpacas - goats - elms - bats - orchids - mammals - a fish - toads
Ans: toads

(Q).
If being buried under soil and mud changes plants into peat through extreme heat and pressure in a swamp over a long period of time, then being buried under soil and mud changes plants into what through extreme heat and pressure in a swam? Answer choices: - amoeba - growth - animals - coal - burrs - deadly - vegetables - peat
(A).
peat

Ques:If chemical energy can become heat energy, then what can become heat energy? Answer choices: - objects that have mass - rain or sun shine - Chemical energy - hydrogen and oxygen - an engine - static electricity - centrifugal force - g forces

Ans:Chemical energy

Ques:If when a body of water receives more water than it can hold it can be deadly and devastating, then what can happen when a body of water receives more water than it can hold? Answer choices: - massive damage - deadly and devastating - cause a hurricane - water will evaporate - Destroy bridges - enormous damage to homes - cloudy and rainy weather - create a new river

Ans:
deadly and devastating