Answer:
A) The catalyst makes lower energy pathways available.
Explanation:
A catalyst is a substance which speeds up a chemical reaction without itself being used in the reaction. Activation energy is the thresh hold energy which is required to initiate a chemical reaction. In the absence of catalyst, the activation energy is high therefore reactions are slower. But, presence of catalyst lowers the activation energy required to initiate the reaction as a result of which the reaction gets an alternate energy pathway to proceed which is responsible for speeding up the reaction.
Answer:
<em><u>A. Neither the subjects nor the researchers can bias the results.</u></em>
Explanation:
As described, a double- blind study is one in which the researcher and his study does not know the person receiving the actual treatment.
Researchers can be bias in their studies as they seek to establish and fine tune results in the way the best favors them. A double-blind study helps to bridge this gap to prevent bias that might be introduced into an experimental set up or while interpreting results.
They both are mechanisms by which new species arise.
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Some people must restrict their pollen interaction owing to hereditary causes since it irritates their respiratory mechanism.
<h2>What is Pollen allergy?</h2>
- Pollen is amongst the most prevalent periodic allergy triggers. Pollen allergy is commonly referred to as "hay fever" by several individuals.
- Pollen allergy is commonly referred to as "seasonal allergic rhinitis" by specialists.
<h3>Allergy</h3>
- Allergy symptoms can affect the lungs by causing asthma, allergic bronchitis, as well as other lung issues.
- Pollen is produced by plants throughout the spring, summer, and early fall. Pollen inhalation might induce allergic responses that harm the lungs.
Learn more about universal donors here:
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The answer is the carboxylic acid!
