1. In order to procure fossil fuels, or even to burn them, we create a great deal of pollution. All of the pollution that is being created is extremely bad for the Earth because it contributed to global warming.
2. When we create new mining cites, we remove trees and soil that was once the home to plant, animal, and insect life.
3. Oil is a very useful fossil fuel, it is used to power many things. But due to the very dangerous nature of fossil fuels, an explosion in Mexico in 2010 caused 210,000,000 U.S. gallons of oil to spill into a gulf. This spill lead to the drowning and poisoning of immeasurable amounts of aquatic animal life.
Answer:
This question is incomplete; the complete part is: what are the independent, dependent, and controlled variables?
Independent variable: ORGANIC AND CHEMICAL FERTILIZERS
Dependent variable: HEIGHT OF PLANT
Controlled variable: Same type of seed, water
Explanation:
Independent variable is the variable that is changed or manipulated by the experimenter. In this question, John wanted to test the effects that organic and chemical fertilizers had on plant growth. Hence, the independent variable is the ORGANIC AND CHEMICAL FERTILIZERS used.
Dependent variable is the variable that responds to changes made to the independent variable. The dependent variable is the variable that is measured in an experiment. In this case, the HEIGHT OF PLANTS MEASURED is the dependent variable.
Controlled variable or Constant is the variable that is kept unchanged throughout the experiment in order not to influence the experimental result or outcome. In this case, the controlled variable is the SAME TYPE OF SEED USED, WATER.
Condensation is when the water vapor changes into water droplets
The dependent variable is the outcome variable
The correct answer is B. pollution.
