The correct answer is C: the gravitational forces due to the sun and the moon cancel each other's effect.
Answer:
C.
It controls the entry and exit of substances.
Answer:
Rocks or lava
Explanation:
In 1° succession there is no soil.. And the process of soil formation take very long time.
In 1° succession rocks or lava is present and lichens, soil erosion, wheathring of rocks helps in soil formation.
Answer:
The correct option is <u>C. The nervous system when the brain regulates the body's breathing and heart rate.</u>
Explanation:
The main function of the respiratory system is to exchange oxygen for carbon dioxide in the body.
The brain controls the rate at which the heart pumps blood. The pumping of the heart supplies oxygenated blood to other parts of the body. Hence, the rate at which heart pumps blood is very important to maintain homeostasis of the respiratory system.
The brain regulates the rate at which a person breathes. This rate is very important to breathe in the right amount of oxygen and to breathe out the right amount of carbon dioxide.
C. Chromosomes because they are need to have the cell funtion.
