In late winter and spring chunks of rock often fall off of the cliff in the picture. what most likely causes the chunks to separate from the cliff?
a.
water flowing over the cliff gradually carries away rocks and debris.
b.
water freezes in the cracks between the rocks and pushes them apart.
c.
wind blowing on the cliff loosens the chunks of rock.
d.
air pollution causes a reaction that widens the cracks between the rocks.

Where can you find prokaryotic and eukaryotic cells?

What does the hardy-weinberg principle relate to? a. chances of survival of an organism b. frequency of alleles in a population c. natural selection in a species d. causes of evolution among organisms

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.