Blood carried by most arteries as bright red an colour while that carried by
most veins is dark red. Why?

Provide one reason why mitosis occurs.

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

Sweating and breathing is an example of differentiation specialization maintaining homeostasis metabolism