Answer: A)Soil can only be formed by natural processes over hundreds or thousands of years.
Explanation: Soil can take 500 years or more for an inch of topsoil.
Answer:
Some people are known as carriers because they carry one allele for a genetic disease, but it is not expressed.
Explanation:
The definition is in the background information.
True the human brain cannot perform 2 tasks that require high level brain function at once what is actually happening is that you are rapidly switching tasks
Behavioral neuroscientists
Behavioral neuroscience, also known as biological psychology, biopsychology, or psychobiology, is the application of the principles of biology to the study of physiological, genetic, and developmental mechanisms of behavior in humans and other animals.
Answer:
The correct answer is option a. "recoil of the lungs".
Explanation:
Normal respiration is passive, which means that no energy is needed to release the air from the lungs. Passive respiration is preceded by the recoil of the lungs that happens without any effort because of the elasticity of the lungs tissue. After inspiration, the diaphragm and intercostal muscles relax and the thoracic cavity and lungs decrease in volume. This causes that the interpulmonary pressure rises above atmospheric pressure, creating an air pressure gradient that put the air out of the lungs without the need of energy.