Which of the following has a negative charge?

Choose the series of activities that will separate sawdust, water and iron fillings.

Which of the following is an example of point source pollution?

Which water treatment method moves water through a membrane that large contaminants cannot pass through?

Which of the following is an example of something that would happen during a chemical reaction?

At the beginning of an experiment, Carl has recorded a total mass of 200 grams. After the reaction, how much total mass should their be.

If a person lives in a remote part of the desert, what renewable energy option should they use?

Which statement differentiates viruses from living things?

Precipitation, evaporation, transpiration, runoff, infiltration, all describe what cycle?

Which of the following could be used as evidence that a volcanic eruption occurred at a particular time in the past?

Which of the following statements correctly represents a global negative impact of fossil fuel usage?

When two tectonic plates are pushing together we call this a...

Which type of medication is most appropriate for a person suffering from a bacterial infection?

What is generally considered to be the most deadly vector in human history?

A disease that is spread by casual contact is known as what type of disease?

Identify the question that is best answered by the theory of evolution.

The components of a homogeneous mixture cold be described as

What is a small area of land that drains all water to a stream or wetland when the surface is saturated?

What area of the ocean can contain hydrothermal vents?

What happens when their is excess nutrients in the water?

After one half-life, 5 grams of a parent isotope remain. How many grams were in the original sample?

Metamorphic rock is rock whose structure has changed. What factors change the rock?

Which factor below is considered abiotic?

In what kind of relationship do both species benefit?

Interactions between many food chains is a(n)

The bottom of the energy pyramid is made up of which kind of organisms?

Which statement best explains how extinction can be beneficial?

If you lived alongside a fast flowing river, which renewable energy source would be the most favorable?

Which energy resource renews the slowest?