List three methods scientists use to identify species and estimate the number of fish in a body of water.

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question

In salt water solution,the salt is the blank

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?