A star's brightness is determined by the distance away from earth.
A metallurgical microscope
Answer:
The mitochondria is the power house of the cell it stores energy for the whole cell. :) hope this helps
Explanation:
Answer:
Explanation:
The things that are changing in an experiment are called variables. A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled
The horsehoe crab because it was one of the first animals to ever live on earth
