A man who was blood group A and a woman who was blood group Ba different blood group A, B, AB and O. Which type of variation does this demonstrate?
Acontinuous, environmental and genetic
B continuous and genetic only
Cdiscontinuous, environmental and genetic
Ddiscontinuous and genetic only

Which of the following is not a potential result of deforestation?

What is the main function of the central vacuole in a plant cell? a. absorbs energy from the sun to produce food b. holds water and maintains turgor pressure c. breaks down molecules to release energy d. contains the cell's genetic material

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .