Answer: It's not observable, but is determined based on a large amount of
related evidence.
Explanation:
Answer:
Some kinds of atoms that are found in DNA must be left out of the models. DNA has so many atoms that the size and cost of a model could be too great. It is impossible to distinguish different kinds of atoms with models.
Explanation:
It is due to lactic acid which builds up in our muscles
Eco- friendly means earth friendly or not harmful to environment