Choose all the answers that apply. Without decomposers: dead organisms would pile up, matter would not be recycled, chemical nutrients would not return to the soil, an ecosystem is unbalanced, the sun's energy cannot be used

20 only answer if 100% sure most high school-aged teens are very active. a. true b. false

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°