LIFE SCIENCE

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OBJECTIVE LIFE SCIENCE

ECOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In the carbon cycle, animals can release carbon back into the cycle through ____ or through ____
A
burning ____ photosynthesis
B
fixation ____ decomposition
C
decomposition ____ photosynthesis
D
respiration ____ decomposition
E
respiration ____ photosynthesis
Explanation: 

Detailed explanation-1: -For example, animals exhale carbon dioxide when they breathe and release carbon dioxide when they decompose. The oceans also exchange carbon with the atmosphere by absorbing carbon, which then sinks as it cools.

Detailed explanation-2: -In animals, oxygen combines with food in the cells to produce energy for daily activity and then gives off carbon. The carbon combines with oxygen to form carbon dioxide (CO2) and is released back into the atmosphere as a waste product when animals breathe and exhale.

Detailed explanation-3: -Carbon moves from living things to the atmosphere. Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants need to get rid of carbon dioxide gas through a process called respiration. Carbon moves from fossil fuels to the atmosphere when fuels are burned.

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