After mitosis how many chromosomes should there be in diploid cells

What is thought to have caused the mass extinction at the end of the cretaceous period?

Flock x flock y flock z total pieces of food eaten (from previous page) 147 93 60 food percentage* % % % simulated number of birds in flock for 3rd generation** * divide each flock's total pieces of food by 300, the total number of pieces of food eaten. ** multiply the food percentage for each flock by the total number of birds (30).

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates