which of the following contribute to dirty air? select three options. photosynthesis fossil fuels smoking mold respiration

i thinking chemical change

yes

no

blue is scattered more than other colors because it travels as shorter, smaller waves. this is why we see a blue sky most of the time.

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.