What refers to the amount of a substance in a given space

If I turn my computer off at least once a week, it will run faster. What is the independent variable? What is the dependent variable? What are some controlled variables?

What was the purpose of the vinegar in the third trial? a. test the effect of raising pH on enzyme action b. test the effect of lowering pH on enzyme action c. serve as a control d. served no purpose

Which of the following does not use the sun's energy in any way? A. Wind B. Geothermal C. Biomass D. Coal

Identify each of the following large objects in the solar system. write how you are able to identify each one.

If we want to now produce a lot of this jellyfish glow protein, what do we have to do after this first successful cloning to reach our goal

Organisms that have groups of specialized cells organized into organs are always

What is a cell how does it effect the body

A farmer crossed a yellow maize plant (Yy) with another yellow maize plant (YY). He planted 200 seeds from this cross. How many of the plants would be yellow?

How do the methods of scientists lead to knowledge?

Actions you do without thinking about them