People can obtain groundwater by drilling a well
a.
above the water table.
b.
into an aquifer.
c.
into the unsaturated zone.
d.
into the impermeable layer.

Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve

Which of the following is the source of energy for photosynthesis? a.) glucose b.) chlorophyll c.) carbon dioxide d.) sunlight

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.