Which of the following is an organic acid?
OCH 20
OCH 3COOH
ОСН 4
ОС 2Н 60

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.

If your blood becomes too concentrated with iona, what will happen to the red blood cells

Which organ controls breathing? lungs alveoli heart diaphragm