Limestone deposits indicate that the location was:

once covered by water
formed by an active volcano
inhabited by mammals
affected by an earthquake

Which plant has a visible leaf modification that will it conserve water in extremely dry environments?

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area

The organelle pictured is found in cells of and is theorized to have once been an independent organism.