AP BIOLOGY

ECOLOGY

CHEMICAL CYCLES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Matter can recycle through the biosphere because
A
matter does not change into new compounds.
B
matter is assembled into chemical compounds.
C
biological systems do not use up matter, they transform it.
D
biological systems use only carbon, oxygen, hydrogen, and nitrogen.
Explanation: 

Detailed explanation-1: -1 Cycles Matter can cycle through the biosphere because biological systems do not use up matter, they transform it. Matter is Recycled within and between the ecosystems. Matter is assembles into living tissues or passed out of the body as waste.

Detailed explanation-2: -Unlike energy, matter is recycled in ecosystems. Decomposers release nutrients when they break down dead organisms. nutrients are taken up by plants through their roots. nutrients pass to primary consumers when they eat the plants.

Detailed explanation-3: -1 Answer. Matter is recycled within and between ecosystems mainly through biogeochemical cycles.

Detailed explanation-4: -Hint: In an ecosystem, the decomposers are referred to as organisms that break down the dead plants and animals in the need to recycle the nutrients in them. The ecosystem needs recycling to function, they cannot function without the help of decomposers.

Detailed explanation-5: -Dead producers and consumers and their waste products provide matter and energy to decomposers. Decomposers transform matter back into inorganic forms that can be recycled within the ecosystem. So, the energy that enters an ecosystem as sunlight eventually flows out of the ecosystem in the form of heat.

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