Upper portions of the grand canyon show undisturbed horizontal layers of sedimentary rock.

which of steno’s principles explain this?

principle of original verticality

principle of original horizontality

principle of superposition

principle of lateral continuity

Which statement describes why the us forest service is important a-it protects ecosystems, supervises public access of lands, and manages wilderness areas. b-it supervises public access of lands, manages wilderness areas, and enforces federal wildlife laws. c- it manages wilderness areas, enforces federal wildlife laws, and foreign governments with international conservation efforts. d- it enforces federal wildlife laws, foreign governments with international conservation efforts, and protects ecosystems.

Nuclear experimentation is a major global issue that affects relationships between countries. describe why countries try to limit the testing of nuclear weapons.

Drag each label to the correct location on the image. the diagram shows the development of the oocyte and the follicle during the menstrual cycle. identify at which sare at their highest and most active. progesteronelevels highestrogen levelsconsistently riseluteinizinghormone levelshighdeveloping follicleoocytemature egg