Answer:
Hey there!
The answer is true, making solar energy one of the most cost effective sources of energy.
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The geosphere supplies all the raw materials that all living things use to build their bodies. The sun supplies the energy directly or indirectly.. (There are some exceptions, some life forms have been found in deep sea vents and produce their energy chemically. And microorganism have been found at great depths in drill holes recently, little is known about them.)
Attached is an image of a <span>catechol and a hydroquinone.
The specifity of the catechol oxidase is given by the spatial position of the OH groups. Most of the enzymes have an active site that's specific to spatial conformities of the substrate. If the substrate is not in such spatial conformation it may not be recognised be the enzyme.</span>
A. is the correct answer. Qualitative observation deals with data that can be observed with our senses.