The right option is; an experimental investigation, because it allows for the control of variables.
The best type of scientific investigation for Bena to use to study this is an experimental investigation, because it allows for the control of variables.
Experimental investigation is a type of scientific investigation in which variables are controlled, modified, and measured in order to obtain facts to buttress or oppose a causal relationship. Experimental investigation includes all the parts of an experiment such as observations, scientific question, hypothesis, procedure, variables (independent and dependent) etc.
It causes eutrophication which means that the algae have too much nutrients and take over the pond, use the oxygen so there is not enough left for marine life, which die as a result.
No 2 people in the world are "exactly alike", so the odds would be 0% chance. Twins, might be closer in alike-ness, but they still aren't "exactly alike". Hope this answered your question.
