A certain igneous rock contains about 75 percent dark silicate minerals. The remainder of the rock is mostly plagioclase feldspar. What type of composition does this igneous rock have?

Describe what happens to the molecules in a solid when energy is added

When using a rock hammer to take a sample of a rock in the field, which of the following pieces of safety equipment should you use? A. ear plugs B. heat-resistant gloves C. eye goggles D. apron

In what parts of the world does cheetahs currently reside

The n = 2 shell of an atom contains a maximum of: two electrons seven electrons eight electrons eleven electrons

Sodium chloride is made up of a positive sodium ion and a negative chloride ion. Therefore, it is an example of

What is the name of the enzyme that adds new nucleotides to build mrna

If two people want to know the chances of their child have a certain genetic disorder, the parents must know their

Which of the following constitutes the primary structure of a protein? A. The folding of a polypeptide chain B. The linear sequence of amino acids in a polypeptide chair C. The polypeptide chains stacked on top of each other D. A pleated sheet E.

Most food chains have no more than six organisms. why is there a limit to the number of links in a food chain? a. animals at the end of the food chain would have too much food available. b.

What was the most significant conclusion that gregor mendel drew from his experiments with pea plants?