Answer:
speed is the answer ok friends
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The Sahel<span> is the zone of transition, in Africa.</span>
Atmosphere, the global sum of all ecosystems, and the kithosphere
It can't be B or C.. or D so try A. Plant succession <span>is the process of change in the species structure of an </span>ecological<span> community over time. The time scale can be decades (for example, after a wildfire), or even millions of years after a mass extinction.</span>
