why an OLDER main sequence star could have more helium present in comparison to a younger main sequence star

Agroup of plant cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. if the mitochondria were unharmed, what would happen to the overall function of the plant cells? a. the cells would not be able to make food, but would be able to release energy from biomolecules. b. the cells would not be able to replicate dna, but would be able to break down waste. c. the cells would not be able to break down waste, but would be able to replicate dna. d. the cells would not be able to release energy from biomolecules, but would be able to make food.

Answer now! good pts and a brainliest potatoes are what im like a potatoe irdk have a good day

Hydroelectric uses moving water to do work such as grinding grains in a mill true or false