Which of the following materials is the heaviest?

A. Aluminum (density 2.7 g/cm3)

B. Copper (density 8.9 g/cm3)

C. Gold (density 19.3 g/cm3)

D. Lead (density 11.4 g/cm3)

What evidence from the Arctic shows the ocean has a significant influence on climate change? Ice absorbs carbon dioxide; open water reflects it. Ice absorbs heat from the sun; open water reflects it.

What is taking place in the G1 phases? A. DNA replication B. division of the cytoplasm C. sexual reproduction D. cell growth E. division of the nucleus

A marine biologist measured the amount of heat radiated from an aquarium over the course of an experiment. He concludes that the aquarium cannot be considered an isolated system. What could he do to make the aquarium an isolated system? A.

Which of the following do scientists do after they have finished drawing conclusions about their research project or experiment?

There is a shadow under a tree. What from of energy must be present for the shadow to occur

Two species of birds feed on berries. the birds are active at different times of the day, and do not come into contact with one another. nonetheless, the presence of one species limits the survival and reproduction of the other.

Satellite imaging can be used to: predict weather analyze geological structures locate oil deposits all of the above

Which bird (s) was/were most successful after 1,000,000 years? Why were they more successful?

A student makes the analogy that the cardiovascular system is like a highway. Why is this a good analogy?

The distribution of related animals and plants across the world