I would say its A because it is doing something harmful
B.
Photosynthesis produces energy which is used during respiration to break down carbohydrates like starch into more usable forms like glucose
<span>The answer is
4 . The population will begin to decrease to depletion of resources and increased competition. This will cause an increase in death rate of the paramecium population as compared to birth rate. This phase follows the latent phase where the population remains the same over time as the population reaches carrying capacity and the birth rate equals death rate</span>
I don't completely understand the question, but I am guessing that you are trying to finish the sentence. If so, the answer is "Diffusion continues until the concentration on both sides of the membrane is <u>equal</u>". The reason it's equal is because diffusion always travels high to low, to reach a point of equilibrium. The particles are trying to move so that water is the same inside and outside of the cell/membrane, and the solute is also equal on the inside and outside of the cell/membrane. If that doesn't make sense, just comment any questions you have and I will try my best to answer :)
Answer:
When you get sick first time your body will produce antibodies and destroy that bacteria or virus after producing that antibody your body has memory cell specialised for that antibody so you won't get sick everytime when you get that specific type of antigen