What are five problems with this experimental design that could have caused the inconsistent results

five problems with this experiment are:

1) lack of proper estimation

2) selected crops are different

3) crops are not grown in same environment, some are outdoor also

4) source of compost obtained is not same

5) timing of giving compost to crops is not same

Omg just reading this experiment made me really -growing some plants both outside and the greenhouse (only suppose to keep it in one place) -why would you get two different composts? -adding the one kind of compost before the seed was planted-adding a different kind of compost after the seeds are planted-and maybe two many different kinds of plants (they grow at different paces)man this is a terrible experiment

Do you still go to school? I mean what are doing in Do u teach or something like that? Is it just for your daughter?