Suppose you think the air temperature is getting colder. give two examples of evidence you could use to support your idea.

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

Are the earth's ocean floor and continents the same age geologically? why or why not?

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.