What is the first step in land preparation

Which image shows labeled organelles that are present only in plant cells?

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

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.