Answer: overpopulation of predators
Explanation: Overpopulation of predators is the correct option. Predators are the organisms which kill other organism so as to obtain them as food. The organism being killed is called as the prey.
If the population of the predators increase this will lead to the extinction of many species of prey. As it is evident that every organism in the ecosystem has a typical role to play. Therefore, it can be said that role of prey will not be performed and this may lead to disturbance in the ecological balance.
<span>Classification systems change over time for a variety of reasons, but the basic gist of the matter is that as we learn more about the natural world around us, these systems change to fit in with and around the new information. Whilst it is worth learning the current system of classification, it is also important to remember that this could always change at any time.</span>
In amino acids, the carboxyl group acts as an acid.
Answer: Option B
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Explanation:
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The molecular formula of the carboxyl group is -COOH. It is composed of one carbon atom bonded with oxygen atom and hydroxyl group.
During ionization process, it leads to the formation of two ions namely a positive ion called 
, whereas a negative ion called 
. Due to the formation of ions, which is nothing but a proton, the carboxyl group present in the amino acid act as an acid.
