Blood typing is less expensive and quicker for analyzing blood evidence than DNA profiling. Since many different people share the same type, this blood evidence is
considered to be:
a) class evidence.
b) trace evidence.
c) biological evidence.
d) individual evidence.

How is the carbon cycle related to global warming ?

Read this summary of a scientific theory: "cells are the most basic structural and functional units of life. all living organisms are made up of one or more cells. all cells that are alive in the world today came from pre-existing cells." which of the following would require this theory to be modified? -a.) a survey finds that a majority of people believe viruses carry out the basic processes of life. -b.) a prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets. -c.) the dna of unicellular and multi-cellular organisms is shown to have many fundamental similarities. -d.) scientific observations show that microscopic organisms living in the deep ocean are not made up of cells.

One drawback of dams is that they can flood land upstream from the dam and reduce water flow downstream from the dam. a. true b. false