At what core temperature does hydrogen begin to fuse to helium? at what core temperature does hydrogen begin to fuse to helium? 3,000 k 100 million k 1 million k 5,800 k 10 million k

Which statement is a reason to support population regulation? a) it is unethical for us to control birth control rates b) humans have the freedom to produce as many children as desired c) the gap between the rich and poor has been narrowing since 1960 d) billions more people on the earth will intensify many environmental and social problems

What’s a special glass that most beakers are made of

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b