Because the animal food chain ultimately relies on the sugars and organic compounds produced by plants, the ratio of 12CO2 to 14CO2 incorporated into animal tissues (e. g., bone) and organs should also be the same as that present in the atmosphere. A. TrueB. False

A. True

Explanation:

The ratio of to incorporated into animal tissue should be the same bacause the amount absorbed by animal tissues must be at constant rate from the sources. This can be used to obtain information regarding years of birth and death of the animal.

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.