Why do sounds not travel through outer space? a. sound waves must have materials to bump together to transfer the waves. b. sound waves in space are immediately absorbed by the sun’s gravity. c. sounds produced by rockets travel too fast to be detected. d. sound waves are destroyed by light waves from the sun.

How do chloroplasts set plants apart from other living things

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline.which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used

Which ideas did your answer contain? check all that apply. no food for organisms no oxygen in the atmosphere no trees or flowering plants no products based on trees or plants (building materials, medicines, fuels, fibers) no fossil fuels