Which of the following is a possible cost of using renewable resources? a. loss of animal species b. land degradation c. lower availability of freshwater d. all of the above

The correct answer is option d. all of the above.

The renewable resources are those, which can be replaced naturally. The main renewable resources are biomass, solar, water or hydro, wind, and geothermal. The excess use of these resources can cause a lack of them, for example, excess use of hydro power causes a decreased access to the water resulting in water shortage. Also, the construction of Dams harms the aquatic animals, present in the area. The geothermal power plants causes the degradation of land. Hence, all of these result in loss of habitat of some native species and their extinction.

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.

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