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.

The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community

How does human environment effect the biosphere

What molecule contains an organisms genetic material, passed down from parents to their offspring