Which layer of the earth do scientists think is made mostly of metal?

A) The inner core

B) Crust

C) the lithosphere

D) the upper mantal

Nuri lives in an area where there is little rain and not many plants. The daytime temperatures can be much higher than nighttime temperatures. Where does Nuri live?

Which describes the greenhouse effect an artificial process, a dangerous process, a natural process, or a new process

Overhunting of deer followed by a very difficult winter caused the deer population on an island to drop by 80%. In the next two years, visitors to the island were surprised to see many young trees sprouting up at the edges of the forest.

In the human body: Select one: A. the bacterial cells are larger than the eukaryotic cells. B. archaea can survive, but bacteria are killed by the immune system. C. there are more microbial cells than human cells. D.

What color should biological hazardous waste bags should be?

Failure of your immune cells to recognize MHC proteins on your normal body cells might result in which type of condition? Select one: a. Leukemia b. Auto-immune diseases c. HIV d. Cancer

The purpose of the Human Genome Project was to: a. map the nucleotide sequence and identify the genes on each human chromosome. b. identify spontaneous alterations in genetic material caused by teratogens. c.

Which of the following does not belong together? A. endothelium B. mesothelium C. membrane capsule D. serous membrane E. all of the above belong grouped together

Adrenergic synapses release the neurotransmitter in the

List three organisms transported by ocean currents.