Answer:
decreases
Explanation:
any decrease in the population can lead to a signal of extinction
any increase is result of rapid growth
<h2>Answer</h2>
The one cell that develops when two gametes fuse during fertilization is the beginning of a new person. This one cell is known as a(n) <u>Zygote</u><u>.</u>
<h3>#CarryOnLearning</h3>

Answer:
Provides body tissues with oxygen
Explanation:
The respiratory system supplies oxygen and removes carbon dioxide from the body, assisting cells in metabolism, acting in conjunction with the circulatory system, providing oxygen to body tissues. In addition, this system is related to smell, that is, our ability to allow odors and also related to speech, due to the presence of so-called vocal folds in one of the organs of the respiratory system.
This system is formed by the nose, nose cavity, pharynx, larynx, trachea, bronchi and lungs.
The point straight overhead on the celestial sphere for any observer is called the zenith and is always 90 degrees from the horizon. :) I hope this helped !