Answer:
Structure A is the most stable since the negative charge is anticipated to occur on the more electro-negative atom and Nitrogen is more electro-negative than sulfur hence structure A is preferred.
Explanation:
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1- [:S=C=N:]
Structure A.
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2- [:S-C≡N:] Structure B.
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3- [:S≡C-N:] Structure C.
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Answer:
Explanation:
Increased nitrogen level in ocean water can lead to excessive growth of aquatic plants in the ocean which in turn leads to high oxygen (dissolved oxygen) uptake by these plants when they decompose. The overgrowth of these plants also prevent light penetration in the ocean water. All these can affect other aquatic organisms particularly those that depend on these dissolved oxygen and/or light penetration (such as fish and crustaceans).
Answer:
Causes refer to the underlying factors and reasons that lead to asthma. Triggers mean the conditions that aggravate or usher in an asthma attack. Knowledge of both causes and triggers will help you manage your asthma.
I hope this helps.
Adenine forms two hydrogen bonds with thymine in DNA while three hydrogen bonds are formed between guanine and cytosine.
Thymine and cytosine are pyrimidines because they have a single ring structure. Adenine and guanine are purines because they have a double ring structure.
