The human population has increased rapidly since the 1700’s. For most of human history, there were fewer than half-billion people on Earth. In mid- 2009, 6.7 billion

people inhabited our planet. Because of these, extensive pollution is everywhere. As

a student, what can you do to save not only a particular system, but the Earth

itself? Write your answer in the table.

to sow awareness in the community about the importance of caring for our environment

Explanation:

The pollution is the adverse introduction of contaminants in the environment by human action. Pollutant compounds have different origins and they appear in the form of chemical substances, noise, heat, light, etc. The best way to avoid pollution on our planet is to raise initiatives for improving environmental policies and thus promoting sustainability in our communities. It seems like a small contribution, but it is important to have into account that behavior change is the most powerful thing that we have to produce big results.

Some good ways to avoid pollution are:

-Restricting the use of the wood stoves

- Reduce the kilometers in your car

-Avoid burning trash, and other substances

- Avoid the use of plastic material (such as plastic bottles)

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question