Answer:
A) Agents
Hope that helped! I wasn't 100% sure but I hope this is right. If it's wrong, please tell me! Have a good day!
The control group is the part of an experiment that does not receive the variable and is used for comparison.
Answer:
Commensalism
Explanation:
Commensalism is when one organism is helped while the other is neutral (neither hurt nor helped). Example: clownfish and anemone.
Another element that is important to bones is calcium
