What are the two main classification of ecosystems?

A. Biotic abiotic

B. Terrestrial and aquatic

C. Closed and open

D. Inputs and outputs

If a man is confused and usually thinks that he is king david (old testament), and if his psychiatrist ordered medication, it would most likely be:

Josh earns $180 for landscaping 3 yards. At this rate, how much will he earn for landscaping 8 yards? a. $60 c. $480 b. $360 d. $180

Out of 5 undisturbed horizontal beds of sedimentary rock, we can say that A. the top layer is oldest B. the lowest layer is oldest C. there is no way of knowing which is oldest D. the 2nd and 3rd are younger than the top layer.

Wich is another important benefit of the carbon cycle

Cells control gene expression at which of the following steps

The cause of type 1 diabetes is the destruction of insulin-producing sites by

Pollution stays in the area where it is produced. a. True b. False

A male tree frog migrates to a new habitat with little ground vegetation and many tall trees. Jumping is the safest way for the frog to move from tree to tree.

Select the correct answer. Neurofibromatosis, a genetic disease caused by mutation on the NF1 gene, follows an autosomal dominant pattern of inheritance.

Which of the following is NOT a way a cell can increase its surface area A. decrease its volume B. add organelles C. let water out of the cell D. all of the above