Which animal uses its skin for respiration? A. pelican B. lion C. toad D. mackerel

You have just worked out at the gym and accumulated lots of metabolic wastes in your blood. physiologically, these wastes first need to be processed by your liver to detoxify them before they can be excreted into your urine via the kidney.

What major event most likely spurred mammal diversification

What would happen to the population of a animal if it food source were removed from the food chain

How does the structure of atp make it an ideal source of energy for the cell?

In an accident at a factory, some nitric acid was split. Name a substance, when added in excess, that would neutralise the acid without leaving an alkaline solution. Explain why

8. List at least 5 new discoveries about viruses.

The phospholipid molecule has two parts, the polar end and the bipolar end. True or False?

Giraffes use their extremely long necks to reach the lees high up on a case he had trees which other animals can not reach giving them a food source for which they have few competitors what can you conclude about natural selection from this

Which is a reason that many organisms that have existed on earth have left no fossils?

Are all organisms with similar physical characteristics related to one another? If not, why?