Minerals are classified in which way? Major minerals are needed in amounts of 500 mg per day or greater. Trace minerals are needed in amounts of 100 mg per day or less. Trace minerals are needed in amounts of 10 mg per day or less. Major minerals are needed in amounts of 200 mg per day or greater.

Which of these eons has the most fossils? Archean Hadean Phanerozoic Proterozoic

3. An odd -numbered Interstate using a single or double digit number indicates a route that: a. Runs in a loop around a city b. Extends outward from a loop around a city c. Runs east and west d. Runs north and south

12. Which of the following is the EON In which we now live? Archean Devonian Phanerozole

Which is the most direct effect of the flooding and drought cycles in Africa? A. Political unrest B. Export economies C. Tsunamis D. Herbivorous migration

Which of the following is a line of evidence that has helped inform our understanding of the climate of the Pleistocene? study of oxygen isotopes preserved in the shells of marine invertebrates evolving use of stone tools and weapons among early humans evolving use of language among early humans amount of carbon dioxide in the atmosphere

In which type of geological formation would you most likely find petroleum? sedimentary basins igneous rock formations metamorphic rock layers granite outcrops

1. Identify the layer of the atmosphere that protects Earth from meteors. troposphere stratosphere thermosphere mesosphere

Molten rock underneath the earth's surface is called A Magma B Lava C Obsidian D $Till$

The __ is an example of an active, continent -continent collision. Arabian Peninsula slamming into North Africa under the Red Sea westward movement of the South American plate over the Nazca plate northern movement of Baja California and a sliver of western California toward the Hawaiian Islands northward movement of India into Eurasia

In the process of Plate tectonics Were to stop acting, Which of the following would be the last to cease? A Earthquakes B Volcanic eruptions C Erosion D tsunamis