1. A chemical equation describes a

This is the build up of charges on an object.

How is the DNA in humans similar and different to DNA in other organisms?

If an atom gains two electrons in a chemical reaction, what is its charge? a Question 4 options: a.-2 b.-1 c.+2 d.+1

According to the plate tectonics model what layers form earths rigid moblie plates

Which one of the following is a characteristic of a metal? A. Becomes negative when combined with other elements. B. Changes the color of litmus paper to red. C. Conducts heat readily. D. Reacts with bases to produce salts.

Which type of radiation has the lowest penetrating ability?

For which one of the following situations will the path length equal the magnitude of the displacement? a A ball on the end of a string is moving in a vertical circle. b A toy train is traveling around a circular track.

A poem on the body system

How many stars, approximately, are in the solar system?

The ends of a magnet where the force is strongest are magnetic