Match the following.

1 . a chemical energy compound with two phosphate groups found in living cells
2 . an agricultural science that deals with crop production and improvement
3 . a food made up of carbon, hydrogen, and oxygen
4 . an atmospheric gas made of one carbon atom for each two oxygen atoms
5 . the green chemical that makes green plants green
6 . produced by organisms as opposed to nonliving chemical processes
7 . an atmospheric gas; a by-product of the light reaction of photosynthesis

a. organic
b. chlorophyll
c. adp
d. agronomy
e. carbohydrate
f. carbon dioxide
g. oxygen

Chalk is an ionic compound. which is a property of all ionic compounds that makes chalkboard? particularly useful for writing on a a high melting point hardness and brittleness inability to dissolve in water a multicolored appearance

Match the types of competition to their descriptions

To answer this question, researchers studied populations of the dusky salamander (desmognathus ochrophaeus) living on different mountain ranges in the southern appalachian mountains. the researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. four mating combinations were tested for each pair of populations (a and b)—two within the same population (female a with male a and female b with male b) and two between populations (female a with male b and female b with male a). the proportion of successful matings for each mating combination was measured. for example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). the reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (aa + bb) minus the sum of the proportion of successful matings of each type between populations (ab + ba). the table provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.