3. What body movements are due to muscles working in opposed
groups? Explain

Elbow

Explanation:

Muscle works in pairs and groups e.g biceps flexes the elbow and triceps extend it and it is called antagonistic muscle action.

The working muscle is called the primer mover or agonist. The relaxing muscle by another muscle is called synergists.

When muscles cause a limb to move through the joint range of motion,it could be synergists or antagonists.

I hope this will help you

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

the answer is: metamorphic rocks often show the presence of fossils, also a

hope i

-lavira: )