PLEASE HELP how is the mRNA altered once transcirption is complete within eukaryotic cells (but before translation beings)

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

Identify the composition of oceanic and continental crystal rocks.in a model of earth’s interior,where would these rocks appear?

Which of the following types of pollution is most responsible for large numbers of deaths worldwide because of unsafe drinking water? (a) nutrient pollution (b) thermal pollution (c) pathogen pollution (d) sediment pollution