Scientists believe that the earth's early atmosphere lacked gas because photosynthetic organisms did not yet exist. a hydrogen b nitrogen c oxygen d sulfur

In which specialized organ of the plant would these cells most likely be found

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.

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .