A DNA molecule is shaped like a

a. long, thin rod.

b. spiral staircase.

c. straight ladder.

d. triple helix.

In a marsh ecosystem, alligators feed on blue crabs. Blue crabs feed on salt meadow grass, shrimp, and detritus. What would most likely happen to the food web if there were a sudden decrease in the number of blue crabs?

When a cell divides into two identical cells, what are these cells called

What percentage of garbage can be burned as fuel?

Like all plants, angiosperms have an alternation of generations. What structure is a gametophyte in the angiosperm life cycle?

It might not be advisable to rely on biochemical evidence alone when

Facts and data are objective, while and opinion is

Which process in the water cycle results directly in snow?

What is the difference in structure of the antennae and antennules?

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