The function of the respiratory system is to move two gases: oxygen and carbon dioxide. Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them
Answer:
C, distance
Explanation:
Distance and mass are two major factors that affect the strength of the gravitational force.
The answer is <span>A) describe the characteristics of life.
It is hard to define life. But, much easier task is description of the characteristics of life. Some of those characteristics are:
- Living things are composed of cells and have different levels of organization.
- Living things grow.
- Living things reproduce.
- Living things respond and adapt to their environment.
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