When plants and animals interact with the atmosphere, they are exchanging which elements abundant in both the atmosphere and living things?

When plants and animals interact with the atmosphere, they are primarily exchanging two elements that are abundant in both the atmosphere and living things. These elements are:

1. Carbon: This is exchanged through the process of photosynthesis in plants. Plants absorb carbon dioxide from the atmosphere and use it, along with sunlight, to make their own food in the form of glucose. This process also releases oxygen into the atmosphere. Animals, on the other hand, consume this glucose through the food they eat and release carbon dioxide back into the atmosphere through respiration.

2. Oxygen: This is the other element that is exchanged. Plants release oxygen into the atmosphere as a byproduct of photosynthesis. Animals then inhale this oxygen and use it to break down glucose and release energy in a process called respiration. This process also produces carbon dioxide, which is exhaled back into the atmosphere.

So, in summary, the two elements that are abundantly exchanged between plants, animals, and the atmosphere are carbon and oxygen.