Answer:
I believe the answer is c
Explanation:
Parent material is responsible for the physical and chemical properties of the soil.
<h3>What is Parent material?</h3>
This is defined as materials such as rocks or organic matter which acts as the starting stage for soil development.
This material are influenced by factors such as weathering which determines the physical and chemical properties of the soil.
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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.
An organism that eats other organisms is called a <u><em>heterotroph</em></u>.