Glucose is broken down during cellular respiration to produce carbon dioxide and
a) ammonia.
b) sucrose.
c) oxygen gas.
d) water vapor.

The correct answer is D) water vapor.

Explanation:

During photosynthesis, plants make glucose from carbon dioxide and water with the help of sunlight. Respiration is opposite to photosynthesis in which the glucose is broken down into carbon dioxide and water.

Respiration occurs in both animals and plants which is required to provide energy to the system in the form of ATP. The carbon dioxide released during respiration is again taken by plants during photosynthesis to make glucose,

The reaction takes place during respiration is:

                       C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + ATP

Therefore the correct answer is D) water vapor.

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.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint