Most of the carbon on Earth is held in ____
a. sediments and rocks
b. oceans
c. soil
d. atmosphere
e. land biomass
ANSWER: b
You might also like to view...
Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that _____
A) arthropods evolved before vertebrates did B) extant terrestrial arthropods are better adapted to terrestrial life than are extant terrestrial vertebrates C) ancestral arthropods must have been poorly adapted to aquatic life, and thus experienced a selective pressure to invade land D) vertebrates evolved from arthropods E) arthropods have had more time to coevolve with land plants than have vertebrates
How does the Tax protein contribute to the increased growth rate of white blood cells?
a. It stabilizes the CREB dimers that bind to the CRE DNA sequence. b. It inhibits the ability of CREB to bind to DNA. c. It phosphorylates the CREB activator protein. d. It allows CREB to bind the CRE-like viral enhancer. e. It stimulates the production of cAMP in a cell.
Intestinal bacteria are necessary for plant-eating animals to digest
A) cellulose. B) lipids. C) proteins. D) carbon dioxide. E) nitrogen.
A(n) ________ is a group of individuals of the same species that live in a particular area
Fill in the blank(s) with correct word