EVERYDAY SCIENCE

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: -Animals that eat plants digest the sugar molecules to get energy for their bodies. Respiration, excretion, and decomposition release the carbon back into the atmosphere or soil, continuing the cycle.

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 is released back into the atmosphere when organisms die, volcanoes erupt, fires blaze, fossil fuels are burned, and through a variety of other mechanisms.

Detailed explanation-4: -Plants and the soil then release carbon dioxide when they decay. Other organisms also release carbon dioxide as they live and die. For example, animals exhale carbon dioxide when they breathe and release carbon dioxide when they decompose.

There is 1 question to complete.