Which of the four main sources of water contain salt water? contain fresh water?

3 - What are some source of electricity?

Reproduction is one of the defining characteristics of living things. true false

You are able to see an object if it either makes its own light (a light source), or it reflects light to your eyes. This information makes which of these statements true?

In Cats, the ellele for short hair is dominant. Show the cross for a purebread short haired cat and a purebread long hair cat. What percentage of the offspring will have short hair?

Five locations are marked on the world map. Which location is most prone to hurricanes? A B C D E

Are trilobite fossils found in Cambrian rocks?

8. List at least 5 new discoveries about viruses.

The phospholipid molecule has two parts, the polar end and the bipolar end. True or False?

Giraffes use their extremely long necks to reach the lees high up on a case he had trees which other animals can not reach giving them a food source for which they have few competitors what can you conclude about natural selection from this

Which is a reason that many organisms that have existed on earth have left no fossils?