Which would probably be the most effective way to reduce
the amount of methane released into the atmosphere?
Reducing the amount of gasoline we use
Making sure to prevent forest fires
Reducing the number of cows we ralse for meat
Reducing the amount of electricity we use

May someone me with these science questions

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium