What would happen if the cell membrane were completely made of a polar
substance?

a. the cell would be unable to maintain a stable internal
environment.
b. the cell would need to use more facilitated diffusion
c. the cell would stop all substances from entering
d. the cell would not be able to produce vacuoles.

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?