1what kind of investigation allow for the control of variables 2
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Which kind of investigations allow for the control of variables?
O hypothesis
experimental
descriptive
comparative

Which of the following statements is true? 1. the mantle of the earth is made of solid nickel and iron. 2. the crust of the earth is made of solid nickel and iron. 3. the inner core is made of solid nickel and iron.

Which is the function of the hypothalamus in thermoregulation? answers: -sensor -effector -stimulus -intergrating center it's either a or c i believe

The carrier molecules of the electron transport system are located in the