What is the difference between a food chain and a food web?
a) a food chain shows a direct relationship; a food web shows a complex relationship
b) food chains only occur in upper-latitude climates; food webs only occur in mid-latitude climates.
c) food chains happen prior to photosynthesis; food webs occur post photosynthesis.
d) a food chain create a climax community: a food web sustains that community.

According to the earth science reference tables, during which geologic time period were the continents of north america, south america, and africa closest together?

To solve this system of equations by elimination, what operation could be used to eliminate the y-variable and find the value of x? 6x + 5y = 2 4x + 2y = 8 a) subtract 2 times the second equation from 3 times the first equation b) subtract 3 times the second equation from 2 times the first equation c) subtract 5 times the second equation from 2 times the first equation d) subtract 2 times the second equation from 5 times the first equation

What gigantic island is primarily in the arctic circle?