The layers of the earth work to gether to protect life from earth because it protects organisms from the harmful rays of the sun. For example, the atmosphere keeps the temperature steady and the ozone layer helps keep the sun's harmful rays away.
<span>
</span>
Oxygen, Carbon Dioxide, water, ADP/ADP are all recycled during photosynthesis and respiration.
Answer:
There is a certain water potential maintained in the body of the paramecium, which can change in response to changes in its environment. When the water solute level is increased all the way up, the water potential in the surrounding is a lot lower than the water potential inside the paramecium. Due to this steep water potential gradient, water will leave the paramecium's cell into the surrounding via osmosis. Water being transported out of the paramecium will cause it to dehydrate and die.
In the opposite case where the solute level is lowered all the way down, no water will enter the paramecium cell because its water potential is lower than the surroundings. The difference in water potentials is so great that the water entering the paramecium's cell will cause to burst and die.
Note: remember that diffusion and osmosis takes place down the concentration gradient. The concentration of one environment is determined in reference to another.
Hope that answers the question, have a great day!