What is nonpoint source pollution? A) pollutants that are found in deep water
B) pollution that comes from a source that can't be tied to a specific location
C) pollutants that are discharged from a specific location
D) pollution in the atmosphere that blocks the sun​

Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

In the practice of science, this type of reasoning is used to develop explanations.