What is an example of the effect of environmental factors on cell differentiation?

A. The plant hormones known
as auxins stimulate cell
elongation in roots and
stems.

B. The sex of turtles is
determined by temperatures
in the nest during incubation

C. The kidneys release more
urine in response to an
increase in blood pressure.

D. The menstrual cycle is
controlled by the hormones
estrogen and progesterone.

What will happen to a population of predators if there is a sudden, temporary increase in the number of prey? a. the population of predators will be uniform with no change. b. the population of predators will increase first and then decrease slowly. c. the population of predators will increase continuously.

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. the following chemical equation shows the combustion of ethane. balance the equation by filling in the coefficients. c2h6 + o2 → co2 + h2o

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.