A material found in air, water, or soil that is harmful to humans or other organisms

1. Experiment

2. Hypothesis

3. Pollutant

4. Matter

What does thermodynamics deal with? A. The transfer of heat and energy B. The properties of sound waves C. The movement of electrons D. The conservation of matter

Electromagnetic waves of various frequencies reach earth from distant parts of the universe. Which of the following can be inferred from this?

When a beta particle is released from the nucleus of an atom: a. the number of electrons in the atom decreases by one b. the number of electrons in the atom increases by one as the beta particle leaves the nucleus and joins the valence electrons c.

As an employee of a summer sports camp, one of your jobs is to prepare the tank of vitamin water for use throughout the day. the mixture calls for 75% pure water and 25% concentrated vitamin drink.

The diagram shows the structures of horse and cat forelimbs. What does the diagram suggest about the evolutionary relationship between these two mammals? A. They have homologous structures, indicating a common ancestor. B.

How far is the Earth for the moon?

It is thought that organelles of eukaryotic organisms, such as mitochondria and chloroplasts (in plant cells) came from

How does temperature affect molecules

The color of Benedictâs solution is blue. What color does it change to in high sugar concentration?

What functional groups of the emulsifying agent provide the hydrophilic character? Do these groups affect the pH?