What is a type of matter made up of a combination of elements

Which of the following can reduce biodiversity within a natural environment? A. Yucca moths pollinate and feed on yucca plants in the Mojave Desert. B. Red-billed oxpeckers eat ticks off of impalas' coats in the grasslands of East Africa. C.

Describe and explain the potential energy changes that occur during the formation of a covalent bond

The processes that are changing the earth today are the same as they were in the past. What is this called?

What is the relationship between DNA and RNA? A. Both DNA and RNA contain the set of instructions for the cell. B. Both RNA and DNA send information from the nucleus out to other parts of the cell. C.

What force pulls the moon towards the earth?

You're going camping and are thinking of carrying 3 gallons of water. How much does the water weigh, in units of pounds?

A student is performing a double-slit experiment to determine the wavelength of a light source. She has measured the distance between dark bands and the distance between the slits and the screen.

If a substance cannot be broken down chemically into smaller substances it is A) An element B) a compound C) an atom D) a molecule

Describe the general characteristics of the nearest stars. (Size, luminosity, color, etc., do not include specific stars)

A small object placed in the gravitational field of a more massive object will a. accelerate toward the more massive object. b. accelerate away from the more massive object. c. move toward the more massive object at a constant speed. d.