Hydrogenotrophy is Choose one: A. the oxidation of water during photosynthesis to liberate electrons, protons, and oxygen gas. B. the use of hydrogen gas as an electron donor. C. an award given to fuel companies that have the most fuel-efficient vehicles. D. the generation of hydrogen gas by methanogens in syntrophy.

the answer will be a) proteins i believe

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.

you know they are heterozygous for a trait because they have it as jj or jj.