The atrioventricular valves.
<span>hematoma... there you go :)</span>
Watching adding notes, correcting, and overall being a part of the project he/she is working on.
<span>Others are external fertilization:
</span>a. all of the sperm will fertilize eggs.
b. sperm and egg will be released simultaneously.
c. the number of sperm and eggs produced will be equal.
<span>e. sperm will be protected until they can unite with the eggs.</span>
