Answer:
The <em><u>Whale Shark</u></em> is the largest fish in the world. On the other hand, the largest mammal is the Blue Whale (not a fish). Hope this helps!
When you ask the question "Has this author been cited in other resources?" you are evaluating the relevance of the resource. You cite a source in order to get a stronger picture of its intellectual value. And if the author (the source) you cited has been cited in other resources too, this means that the source is reliable (is able to be trusted), you are evaluating the reliability of the source.
There are several reasons why you should cite resources in your works: to proof your thesis, to show proper research and many more.
An example of a person is not a bad guy and I don’t want him going back
It is useful for an ecologist to identify the keystone species in an ecosystem because the keystone species is important to maintaining the stability of an ecosystem, and any changes in the keystone species population shows that there is changes in ecosystem health.
If you have one sickle cell gene, you have sickle cell trait and you will not develop the sickle cell disease. If you inherit two sickle cell genes, you have sickle cell anemia.