If an organism of unknown genotype is crossed with a homozygous recessive organism and half of the offspring show the dominant phenotype and the other half of the offspring show the recessive phenotype, then the unknown genotype must be:

Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic.

Body temperature is tightly regulated in mammals for example when external temperatures drop too much the body of a mammal response by in order to it's core temperature.