You!

which of the following is an example of chemical weathering?

a. a stream rounds and smoothes rocks into pebbles.

b. freezing and thawing rainwater widens a crack in a sidewalk.

c. a growing tree root splits a boulder in two.

d. acid rain discolors and disfigures a limestone statue.

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.

Which direction does the energy flow in this energy pyramid ?

Aparent with freckles is crossed with a parent without freckles. the punnett square shows the possible genotypes and phenotypes of the offspring. which statement accurately describes the probability of phenotypes? a.the offspring are more likely to have freckles. b.the offspring are more likely to have no freckles. c.the likelihood of the offspring having freckles and not having freckles is the same. d.the likelihood of the offspring having freckles and not having freckles cannot be determined.