Which statement best describes a structural adaption a) birds migrate south to avoid a cold winter b) a ground squirrels heart rate slows during hibernation c) snakes sunbathe during the day to increase their body temperature d) the large ears of the desert rat give off heat

Which of the following is a good definition for the word adaptation? question 1 options: a trait that an organism survive and reproduce in its environment. a change in an organism's environment. the way in which animals obtain food. a temperature change that can cause the extinction of plants and animals.

What process decreases the salinity of ocean water? decreased precipitationdecreased melting of glaciersincreased evaporationincreased runoff from rivers

Can an organism fill more than one trophic level?