If cool breezes are provided by vanes rotating in an electric fan, then what is provided by vanes rotating in an electric fan? Answer choices: - heat energy - cool breezes - torrential rains - Animal survival - kinetic energy - loud storms - energy - hot winds
cool breezes

If adecrease in differentiation tends to occur when individuals move in and out of a population, then what tends to occur when individuals move in and out of a population? Answer choices: - By wind and rain - permineralization - The bending of a ray of light - Something with a head, thorax, and abdomen - a decrease in differentiation - competing for resources - barks and snarls - metabolic reaction
a decrease in differentiation

If fibers on mammals keep them warm, then what keeps mammals warm? Answer choices: - fibers - eyeballs - white blood cells - fur - the skin - sweating - nostrils - heat
fibers

If ferns reproduce with spores, then what do ferns reproduce with? Answer choices: - pollen - heat - a cuticle - sunlight - alleles - spores - chemicals - bushes
spores