The nervous system controls body functions that do not require thought.
a. central
b. parasympathetic
c. autonomic
d. sympathetic

Which member of the following food chain will be least affected by ddt, a pesticide water pollutant, if bio-magnification is occurring? algae> zooplankton> crayfish> leopard frog> large mouth bass

Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred

In the first stage of the nuclear fuel cycle the spent fuel must be transported, processed, and disposed of properly. true or false