D) gravel on the bottom of the aquarium. "Abiotic" means "non-living," so you would essentially pick the answer that does not include any organisms (the organisms here are plants, fish, and algae).
Answer:
Made mostly of collagen, bone is living, growing tissue. Collagen is a protein that provides a soft framework, and calcium phosphate is a mineral that adds strength and hardens the framework. This combination of collagen and calcium makes bone strong and flexible enough to withstand stress.
Explanation:
hope that helps
Sometimes you can get different results by doing the expirement again so before they come to any conclusions they want to know that that is the result the majority of the time.
Because as trials go on scientists discover more information and alter the theories and that is why they are referred to as a "theory" instead of a scientific "law"
The best example i can come up is a car factory. Car instructions go in (mRNA), car parts put together (amino acid chain), and then completed cars leave (protein).
