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:
Judge
Explanation:
The Judge is the one who has the authority to tell the creatives that their idea of using a world championship rodeo bull rider to promote handheld kitchen appliances is not a good idea and will probably open up the agency and its client to a great deal of ridicule because the judge is appointed to decide the process, form an opinion and the outcome of the creatives case.
Answer: both testing effects and the effects of the calming music
Explanation: A brief intelligence test helps reinforce learning and makes it more likely that the participants can retrieve related information later as it is more likely to retain information if it is learned separated over time. Calming music may improve test-taking skills, improve performance, reduce stress and test anxiety of the participants and well as improving concentration. Therefore, the participants' increases in test scores may be due to both testing effects and the effects of the calming music.
Answer:Positive Punishment
Explanation:
Positive is when a stimulus is added with a purpose to decrease a behavior.
Punishment is a term used in Operant conditioning which discourages an unwanted behavior from reoccurring.
When a person is exposed to unwanted negative consequences they are likely to quite the behavior.
A punishment is positive when it adds unwanted consequences.
A meeting with the dean was added, and this decreased the behavior (unprofessional behavior), so this is positive punishment.
Answer:
The correct approach is "Blind experiment".
Explanation:
- The Respondents or even just the Committee monitoring the procedure as well as analysis or some variation thereof, called the Blind experiment, retain such knowledge that may impart discrimination into the findings.
- Due to the lack of understanding among the members of such a community, this would be described as a blind experiment.
