Polar bears have white fur but black skin underneath. consider the climate in which the bears live. what might be the adaptive advantage of the bears' black skin?

Time ! for a smell to begin the process of registering in your brain, first you must a) inhale odor molecules into the nasal cavity b)transduce scent chemicals c)have a scent to inhale d)all answers can work

Actinobacteria sp. are fermenting organisms (which do you use oxygen to breathe) referred to as chemoorganohetereotrophs this means they break down organic material and convert it to inorganic material. which part of the carbon cycle does this describe

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel