Which experiment has the most reliable results?

A. An experiment that proves the hypothesis

B. An experiment that uses expensive equipment

C. An experiment in which the results are repeatable

D. An experiment with no hypothesis

What is your he law of conservation of energy?

How do scientists know that humans originated in Africa?

What is the one property that is responsible for all the other special properties of water?

Because of biogeochemical cycling, A. human activity has no effect on elements, chemical compounds, and other forms of matter. B. living organisms are not limited by any one nutrient. C. nutrients are circulated throughout the biosphere. D.

Soil is not directly important to animal life.

A classmate states that mitochondria and chloroplasts descended from the same type of bacteria. Does the evidence support this? explain your reasoning

Can gel electrophoresis separate DNA fragments

Which question can be answered using the scientific method? A) what was the highest temperature that was recorded yesterday? B) what is the most interesting aspect of the light dependent reactions?

Which of the following correctly describes a plant structure and how it aids in the process of cellular respiration? A. roots - collects water required for cellular respiration B. mitochondria - the site of cellular respiration C.

Why would a lab technician choose a bacterial artificial chromosome for cloning a gene rather than a plasmid?