Unless a series of sedimentary rock layers has been overturned, which layer is usually the oldest?

the layer on the top

the layer with the most minerals

the layer with the most fossils

the layer on the bottom

the igneous intrusion (dike)

When organisms within a species die before they reproduce, what happens to the species? A) The species diverges into two different species. B) Two species merge into one. C) The species eventually becomes extinct. D) A new species emerges

What is a environmental variable that effect wing color

Would you expect a honeycreeper species that lives only on the island of Hawaii to have evolved before or after a honeycreeper species that lives on the islands of Hawaii, Maui, and Oahu? Explain your answer.

If forces on an object are balance what is the net force

Trenches in the ocean are

When the morning announcements call for you to rise to recite the pledge of allegiance, the signal to stand up on your feet is sent by way of which system?

Which statement is true about cell differentiation? A. It happens in all cells. B. It causes cells to change and specialize. C. It produces identical cells. D. It happens during cell division.

What two factors regulate cell division

Describe the cultural component "Innovation." Give two examples. Give an example of the cultural component "Cultural Universals this is sociology

What are two generalizations you could make about the spread of enlightenment ideas?