How could scientists use radioisotopes to study the function of the golgi apparatus?

answer; /// i believe the name is ( check first good luck.hope this

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

sorry, is there a picture? i do not see any arrows.

wut? unius0123 wut?