Which condition is a biotic factor of an aquarium ecosystem?
amount of oxygen in the water
gravel on the bottom of the aquarium
algae growing on the glass
temperature of the water

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.

2polnis which of the following is an advantage of an in vitro experiment?me

[34 points awarded to the best answer, use facts and/or data] 1.) what's the likelihood of thunderstorms occurring in the state of maryland? {this question is for a project for science, use facts and/or data and explain why . 34 points to the best answer]