Which of they following is a source of photochemical smog? a. fossil fuels b. wind energy c. biomass fuels d. nuclear energy

photochemical smog is also known as summer smog is the chemical reaction of sunlight. Volatile and nitrogen oxides compound in the atmosphere which then leaves airborne particles.

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up