Duckweed performs photosynthesis. Photosynthesis produces oxygen. They take in carbon dioxide and produce oxygen. So, when it is kept in the light cycle it will produce oxygen which will get dissolved in the water.
But the flask with water does not contain dissolved oxygen. So, at the end of light cycle the flask containing the plant will have more DO.
Now, in dark the plant does not produce oxygen. Instead it uses it to break the glucose and produce carbon dioxide. While this is not the case with the flask without the weed.
So, the flask without the plant will have more DO then the flask with the plant.
So, at the end of light cycle the flask with the weed will have more oxygen while at the end of dark cycle the flask with water will have more DO.
The measure of how much water can be stored in geological materials is referred to as porosity. The correct option is C.
<h3>What are geological materials?</h3>
A geological material is a natural material extracted from the Earth in the form of rock or sediment, such as rocks, clays, sands, limestone, and other industrial minerals.
The percentage of void space in a rock is defined as porosity. It is defined as the ratio of the void or pore space volume to the total volume.
Thus, the correct option is C.
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It’s a type of Nucleotide
So, enzymes work to carry out functions like transforming food or chemical elements into other substances needed. in this one, if a second enzyme they will work faster and the activity increases. it speeds up the reaction
The answer is B because class of drugs known as expectorants.
