Explanation:
• If new oceanic crust is being continuously created
along the earth’s spreading ridge system, then we
must find some way to re-cycle it back into the
mantle. [WHY? –otherwise the earth would be
expanding!!!!]
Trade winds, prevailing westerlies, polar easterlies
Answer:
They may generate a testable hypothesis.
They have a narrow focus.
They address a gap in knowledge.
Explanation:
<span>The Sahel is the ecoclimatic and biogeographic zone of transition in Africa between the Sahara to the north and the Sudanian Savanna to the south.</span>
