The energy input into an ecosystem can come from

a. sunlight

b. chemical compounds

C. soil

d. A and B

A child is born with a genetic disease caused by mutations found in mtDNA (mitochondrial DNA); How did the child inherit this disorder? A) The child received the mutation from his mother. B) The child received the mutation from the father.

If you had to define ecological succession in your own words in a 140 character text how would you define it

Which of the following is a false statement? a. More energy is produced as a product to be used by organisms in aerobic respiration than anaerobic. b.

What did the structure of DNA's double helix suggest about DNA's properties?

Which of the following "vegetables" is botanically a fruit? A) lettuce B) radish C) cabbage D) okra

What is an abiotic factor of a marine ecosystem? A). Food produced B). Temperature change as you go deeper into the ocean C). Reproduction of animals

1. Suppose that xylem were located only in the roots and stems of a plant. Would fluids in the xylem still move? Explain.

What activity will decrease body temperature? Sweating Exercising Adding clothing Shivering

Organisms with true radial symmetry A. tend to be highly mobile. B. do not have a distinct head region and tend to be sedentary or passive drifters. C. can be divided into two matching halves along only one plane. D.

1. The Earth's carbon cycle consists of the flow, cycling, and recycling of all of the carbon on the Earth. Every living organism's composition includes the element carbon. How does carbon become part of living organisms?