Which correctly lists three different geologic features that help scientists determine the relative ages of rocks by their positions?
magma, erosion, and intrusions
O erosion, magma, and cross-cutting relationships
O intrusions, index fossils, and magma
las index fossils, intrusions, and cross-cutting relationships

Which kind of aquatic ecosystem does the photograph most likely show? a. marsh b. swamp c. lake d. river

How does the diagram explain ocean currents? earth tilt 23.5 degreesquestion 1 options: earth's tilt causes uneven heating of earth which causes currents. earth's tilt causes the ocean to move because of gravity. earth's tilt and its rotation cause currents. earth's tilt causes uneven distribution of salt which causes currents.

What gases are carried by the blood