He association of two or more polypeptides in a multimeric protein is known as the <span>Quaternary structure.</span>
this ones simple all the others don't use sunlight because they cant make food within themselves but plants on the other hand use direct sunlight to make their food unlike the others. ;]
The answer to your question is answer choice .1 Independent variable.
An asteroid hitting the earth would cause a lot of dust, ash, and other debris to go into the atmosphere which would block the sun which would cause the temperature to decrease.
