10 points to first person which of the following is true of carbon carbon is present in all organisms and in the atmosphere carbon moves from consumers to producers carbon must be fixed by bacteria before other organisms can use it carbon can only be released from dead organisms by decomposers

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

The process by which natural forces move weathered rock and soil brim one place to another is called

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species