In humans, pharyngeal slits are presents in the embryo and develop into the the ears
Independent Variables can be manipulated, and a Dependent Variable are observed and measured. Another way to say it is that the Independent variables change to get different results while the Dependent variables never change because you are trying to see what causes it to change
The diaphragm in the diagram below is a muscle that contracts during inhalation. thus option A is correct option.
<h3>What is the role of the diaphragm?</h3>
The diaphragm, located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily.
Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges.
Learn more about the diaphragm here:
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Answer:
c all matter will remain unchanged
Answer:
A
Explanation:
insecticides are safe to use
