I dont know a thinggg about Dna or Rna andhelp would be appreciated :D Will give brainliest. (Just #4 pleae)

What did hunter gathers do to alter the environment?

The table below shows data for a population of fish in a pond. fish body color # of fins scales? tail shape a silver 4 yes fan b pink 4 yes flat c black 4 yes fan d orange 4 yes flat e orange 4 yes fan f silver 4 yes flat which of the above characteristics would be most in developing a classification system for the fish? a. body color and tail shape b. presence of scales and tail shape c. body color and number of fins d. number of fins and presence of scales

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture