Answer:
<em>Sit Ups. Basic, but effective. ...
</em>
<em>Crunches. These bite-size versions of the whole enchilada isolate smaller, deeper abdominal muscles in their motion. ...
</em>
<em>Bicycles. Lie on your back feet in the air, knees bent. ...
</em>
<em>Jumping Jacks. ...
</em>
<em>Squats. ...
</em>
<em>Lunges. ...
</em>
<em>Squat Jumps. ...
</em>
<em>Push Ups.</em>
Explanation:
HIV crossed from chimps to humans in the 1920's in what is now the Democratic Republic of Congo. This was probably as a result of chimps carrying the Simian Immunodeficiency Virus (SIV), a virus closely related to HIV, being hunted and eaten by people living in the area.
The answer is going to be 90%.