PLEASE HELP I"LL GIVE Fossil fuels are a resource because it would take too long to form new supplies.

nonrenewable

renewable

damaging

polluting

The first signs of cellular differentiation occur in the blastocyst. why is cellular differentiation important for the development of a fully formed human infant?

What are the student's observations and inferences before he starts his investigation?

The small molecule cyclic amp (camp) takes about 0.2 second to diffuse 10 μm, on average, in a cell. suppose that camp is produced near the plasma membrane on one end of the cell; how long will it take for this camp to diffuse through the cytosol and reach the opposite end of a very large cell, on average? assume that the cell is 200 μm in diameter.