Which statement is incorrect about the adult human heart?

Question 28 options:

Blood in the right ventricle is deoxygenated.

Blood in the left ventricle is deoxygenated.

Blood in the pulmonary artery is deoxygenated.

Blood in the pulmonary vein is oxygenated.

Answer not listed

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.

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Which of these is most likely to happen if parallax measurements of star distances are taken after a gap of six months? the results would be accurate the results would be inconsistent the results would not be valid the results would not be repeated