The is the source of all energy in our atmosphere.

The sun

Explanation:

The Sun is the source of all energy in our atmosphere.

Explanation:

The Sun is Earth's primary source of energy.

Our heat, light, energy, oxygen cycle, rain cycle, all of our food comes from the Sun.

All of the energy that Earth receives from the Sun is used in photosynthesis. In the atmosphere water vapor condenses to form clouds.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.