Enzyme tendon
system

special chemical that helps start or speed up chemical reactions

rope-like tissue that attaches muscle to bone

an organized group of objects working together for a common purpose.

Matching

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )

probably not if net force is zero

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle