Select each correct answer.
by comparing fossils in higher sedimentary layers with fossils in lower sedimentary layers, scientists can learn which of the following?

select one or more:
a. the relative age of different species
b. which types of organisms were more common during various time periods
c. how species have evolved over time

The galapagos island contain 13 species of finches four of the species are seen here it is believed that all of the species had one common ancestor and overtime

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell

The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?