Ascientist wants to determine if coral reefs can grow below 150 feet
identify
independent variable:
dependent variable:
control variables (at least three):
qualitative or quantitative?

Fossils can only be formed when? if mud, silt or tar is in the area to preserve the fossil ierosion does not occur and allows the fossil to form oxygen and microorganisms cannot decay the bones the area is dry and does not contain mud or silt

In which state was more than 100 billion tons of coal mined in 2005?

Which measure of an earthquake depends on how close you are to the focus?