When people use plastic combs on their hair, the combs become negatively charged. which statements about this situation are true?
the comb loses electrons.
the comb gains electrons.
the hair loses electrons.
the hair gains protons.
the hair loses protons.

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

Which statement explains how gravity and intertia work together

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.