Carbon cycles from the atmosphere into plants and living things. For example, carbon is a pollutant in the atmosphere as carbon dioxide.
...
Photosynthesis. Plants pull in carbon dioxide out of the air through photosynthesis. ...
Decomposition. ...
Respiration. ...
Combustion.
I hope that this one is correct - C
Since transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers.
Answer:
The fourth plant that receives pure water is the control group.
Explanation:
The election of a control group is essential in an experiment. Its principal purpose is to allow the discrimination of the results obtained by the treatment in the study, in this case, <em>the different concentrations of salty water that each plant receives</em>. The control group provides a reference point. It must be selected from the same population of the treatment groups. Both groups must be similar in every variable that might influence the results, <u>except for the study treatment.</u>
<span>Touching a hot pan and yanking your hand away: Pain and reflexes
Jumping up and down: Equilibrium and depth perception.
Drinking water on a hot day: Dehydration and lowering your temperature.
Sneezing: reaction to dust, smut, grains, or allergies.
Blushing: The rising of your blood temperature and nervousness.
Hitting your head on the top of the car as you get into it: Pain and depth perception.
Breathing harder during a jog: increased heart rate, blood flow, and less oxygen. </span>
Many scientists agree that the universe is about 13 billion years old.
