Succession that occurs after a fire in an ecosystem is called

There are six elements that make up most of the human body. which of the following is not one of these six elements?

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline.which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used

What is the next step in muscle contraction after the actin changes shape? (apex)