Lightning occurs mainly during which stage of thunderstorm formation?

In which process is oxygen absorbed by an organism asap apex

According to the theory of punctuated equilibrium, at what rate does speciation occur? species change depending on the rate of natural selection. after periods of stasis, new species evolve relatively rapidly. species change slowly and eventually form new species. some species change quickly and others change slowly to balance the overall rate.

Describe the function of the endomembrane system? what organelles are involved?