Is this true or false: trilobites are common fossils, related to the same group as today's dolphins, whales, and seals.

14. Where does cell respiration take place?

Everyone has two alleles for blood type. where do these two alleles come from?

What is the fucnction of the atmospneres ozone layer.?

Pasteurization Select one: a. kills all vegetative forms. b. reduces the number of vegetative forms. c. reduces the number of endospores. d. increases food nutrient value. e. is used to sterilize food products.

What model do scientist use to describe how electrons move around the nucleus?

Which of the 4 groups of organic compounds do enzymes belong in?

What makes corn and wheat grow taller

Identify the response. A rabbit is sitting in a field. The rabbit sees and hears a dog barking. The rabbit runs into its hole. What is the response? a) The rabbit sitting in the field b) The rabbit hearing and seeing the dog.

Whitch of the following would cause an increase in competition in a forest ecosystem? Increase in the number of plants Decrease in the number of plants Decrease in the number of bears Increase in the amount of sunlight

How does the release of trapped gases in magma cause a volcano to erupt?