6. Which of the following fossils is an example of a body fossil? ~ Dinosaur Foot Print's

~ Raccon excrement

~ The skull of a cow

~ A piece of fruit containing teeth mark's

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

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.

Which of the following molecules will diffuse most quickly across a lipid bilayer membrane? a. h2o b. o2 c. h2po4 d. glucose e. na+