Answer:
six
Explanation:
Professor of Chemistry, University of Minnesota, Minneapolis. Oxygen group element, also called chalcogen, any of the six chemical elements making up Group 16 (VIa) of the periodic classification—namely, oxygen (O), sulfur (S), selenium (Se), tellurium (Te), polonium (Po), and livermorium (Lv).
Answer:
Nitrogen is removed from the atmosphere mainly by nitrogen-fixing bacteria in the soil and oceans (blue-green algae).
Explanation:
Nitrogen is removed from the atmosphere mainly by nitrogen-fixing bacteria in the soil and oceans (blue-green algae).
A. A reason for the increased use of electricity is the increasing population; more people are being born, more people are using electricity.
b. A strategy to reduce the amount of fossil fuels is for more people to use electric cars where the electricity is sourced naturally. Perhaps the government could implement a system where drivers of electric cars could be rewarded.
If you want water to flow out of the tubing piece filled with a 50% solution, the minimum concentration of the solution in the beaker must be more than 50%. This is because, water can only flow out of the tubing piece if the concentration of the water inside the beaker is greater than that of the tubing piece; the water will move from the region of low concentration to the region of high concentration.
