Renewable resources
can be replenished over months, years, or decades
are all living resources
have finite supplies that will one day be used up
include iron, natural gas, and copper

can be replenished over months, years, or decades.

can be replenished over months, years, or decades

Renewable resources are those natural resources which will replenish after once they are consumed, either by natural reproduction or by the other reoccurrance process in a finite time of months, years or decades. These resources are abundantly present in nature these are sunlight, water, soil, wind and others.

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many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.