help? match the scientists with the contribution he made to the big bang theory and our understanding of the universe. LOOK AT THE PICTURE

Explain why phospholipid molecules form a bilayer. (3 marks)

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere

If a cell is placed into a hypertonic environment,what will happen to it ? a)it will shrink or shrivel b)nothing c)it will burst d) it will expand or enlarge