PLEASE HELP 2O POINTS 1. Why is the quadrat method useful for estimating snail populations? Do you think it would work for fish populations?
2. Why do researchers need a lot of data to monitor a species population? What trends can you see in the data that you would have missed otherwise?
3. Which snail species had a higher population in part one? What adaptations aided in their survival?
4. Which shell adaptation did you choose for part two and why? Discuss the results and the effectiveness of the adaptation.
5. The intertidal zone can be a difficult place to live. Looking at your data, how did the tide affect each species of snail?

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

There is a liquid capsule inside a cup full of liquid. the cup full of liquid has salt in it and the liquid capsule has no salt in it. in which direction will the solvent flow? a. the salt does not have to move b. from the capsule to the larger cup c. equally between the capsule and the cup d. from the larger cup to the capsule

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?