Which of these substances would you expect to have the lowest melting point?

a. sodium chloride
b. silicon dioxide
c. sodium hydroxide
d. paraffin

This is collection of data made by comparing objects in standard units. in science, the units are metric.

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water

In the controversial scientific process of cloning, organisms are created that are genetically identical to there parent. this process would be classified as