Ascientist designs an experiment to test how the intensity or strength of light affects plant growth which of the following should be consistent among the plants he test mark all that apply

The variables that must be kept constant in different subjects of an experiment are known as controlled variables. These variables are those that may affect the experiment's outcome, so they are kept the same for each of the trials.

In this example, the amount of water the plants receive, the size of their pots and the amount of soil in the pots are all variables that must be controlled.

Mitochondria is the cell organelle that produced the energy that is needed in the body system in form of atp, that is why it is called the power house of the cell. energy is needed by the living organisms to carry out the activities which sustain life.  if the mitochondria is destroyed atp will not be produced. if the mitochondria is destroyed, energy production will stop and the affected living organism will not have the energy to carry out the necessary life processes; this will lead to the death of the organism.