Counting the number of bubbles produced in 1 minute is not an accurate way to measure the rate of photosynthesis.
Suggest two ways the method could be improved to measure the rate of
photosynthesis more accurately.

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?

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?