in the course of fish evolution, two of the gill slits slowly advanced into the jaws.
The evolution of fish started about 530 million years in the past at some point during the Cambrian explosion. It become during this time that the early chordates advanced the cranium and the vertebral column, main to the first craniates and vertebrates. the first fish lineages belong to the Agnatha or jawless fish.
The earliest fish, corresponding to living hagfish, developed about 550 million years in the past. Diversifications that in the end advanced in fish include an entire vertebral column, jaws, and an endoskeleton manufactured from bones in preference to cartilage. Fish live in the course of the sea and in freshwater lakes and streams.
New studies have uncovered the genetic foundation of gill covers in fish, which came about over 430 million years ago. It sheds light on one of the most essential evolutionary traits for fish, in addition to over vertebrates.
In jawless fishes, a sequence of gills opened behind the mouth, and those gills became supported by way of cartilaginous elements. the primary set of these elements surrounded the mouth to shape the jaw.
Learn more about the evolutions of fishes here: brainly.com/question/1426050
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Answer:
David, Brennan. "Surveillance: Taking It Downtown." Columbia Daily Tribune, 28 Mar. 2010, www.columbiatribune.com/news/perspectives/surveillance-taking-it-downtown/article_d9197f56-2331-5d7f-9894-03efb04fe7b8.html. Accessed 9 June 2010.
Explanation:
A citation is a reference to a published or unpublished source. More precisely, a citation is an abbreviated alphanumeric expression embedded in the body of an intellectual work that denotes an entry in the bibliographic references section of the work for the purpose of acknowledging the relevance of the works of others to the topic of discussion at the spot where the citation appears.
Generally the combination of both the in-body citation and the bibliographic entry constitutes what is commonly thought of as a citation.
Let me explain how the critical thinking might work here: remember that critical thinking is the objective analysis and evaluation of an issue in order to form a judgement. So<span> instead of blindly following one side because they seem the smartest it is better to use your head to ask "why" and whether they make the most sense. That is how it can be done</span>
•Spectral Class and Temperature
•Short Main-Sequence Lifespan
