During the most recent ice age, glaciers covered about ________ percent of Earth's land area.
Fill in the blank(s) with the appropriate word(s).
30
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Why are seasonal changes less noticeable near the equator than at mid-latitudes?
What will be an ideal response?
Saturn is famous for its rings. Which of the following Jovian planets does not have rings?
A) Uranus B) Neptune C) Jupiter D) None, all of the Jovian planets have rings
If the ice accumulation at the upper end of glacier decreases, and/or the ice loss at the lower end increases, the glacial ice front will:
a. Advance b. Retreat c. Reach dynamic stable d. Cannot be determined
Within soil, a natural cycle of
A) decomposers break down detritus to release nutrients used by producers. B) detritus breaks down by the action of weak soil acids to release nutrients used by producers. C) decomposers break down nutrients to release detritus used by producers. D) decomposers break down detritus to release nutrients used by consumers.