There are two tomato plants. one of them is kept in an oxygen chamber with a light source and another and another is kept in sunlight. both of them are watered regularly. what will be the observation after two weeks?

If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?

Diagram of the evolution of land plants?

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass