The resistance of a mineral to abrasion is known as ________
A) hardness B) luster C) streak D) cleavage
A
Environmental & Atmospheric Sciences
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Explain whether a force is needed to keep a satellite orbiting at constant speed around the Earth and why or why not.
What will be an ideal response?
Environmental & Atmospheric Sciences
Animals that have only a single body opening that serves as both mouth and anus include
A. cnidarians and flatworms. B. cnidarians and sponges. C. cnidarians, flatworms, and roundworms. D. cnidarians only.
Environmental & Atmospheric Sciences
Where would you expect to find the lowest temperatures in January?
A) Land in the Southern hemisphere B) Ocean in the Southern Hemisphere C) Land in the Northern Hemisphere D) Ocean in the Northern Hemisphere
Environmental & Atmospheric Sciences
The major source of free oxygen in the atmosphere is from ________
A) green plants B) molten rock C) silicate minerals D) water E) glaciers
Environmental & Atmospheric Sciences