In general terms, exothermic reactions release energy, so the energy goes from the system to the surroundings.
answer is B. And chloroplast is only found is plant cells.
when an optical telescope located on the ground is used to view the sky the image has to surpass through the earth's atmosphere which is polluted. so the resolution wont be clear. When viewed on a mountain top both optical and infrared telescopes would perform better as the air above the atmosphere is less depth and cleaner.
Answer:
4,1,5,3,2 (from left to right)
