Horses went extinct in north america and did not return until they were ferried in boats by european settlers (no land mammal can swim on its own across an ocean). from a horse's perspective, the ocean barrier is best described as what? a. a corridor b. a filter c. a sweepstakes route

answer; //the above statement is (false);

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.