Which of the following is donated by the nitrogen pool to the urea cycle? #1 CH4

#2 CO₂

#3 NH3

#4 CO(NH₂)₂

Does the sun release radiant energy?

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

Each hereditary trait corresponds to