Which of these is purposefully changed during a scientific investigation?

A. Test variable (independent variable)

B. Outcome variable (dependent variable)

C. Control group

D. Hypothesis

During a quiet eruption, a lava flow may set fire to and then bury everything in its path. true or false

What are the three most commonly used instruments for the determination of free-living physical activity and energy expenditure?

The name for the hollow muscular organ that stores urine.

A species can be characterized by which of the following common characteristics?

Do all worms belong to the same phylum?

The speed of a sound wave a. is slower than an electromagnetic wave b. is faster than an electromagnetic wave c. is equal to an electromagnetic wave d. cannot be measured

Inner membrane of mitochondria evolved from

What would most likely happen to life on Earth if the carbon cycle stopped? Life would continue unchanged. Life would conse to exist. Only plants would be affected. Only animals would be affected.

Based on the pattern of nutrition, all animals are classified as?

What happens during m phase of the cell cycle