students are measuring the rate of enzyme activity. the graph below shows the rate of enzyme action as they increase the temperature. what is one possible reason the enzyme is less effective at high temperature

The heat will cause the enzyme to denature(deform) and the subtrate will no longer fit into the enzyme.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".