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:
I think it would be D. if not then its C.
Explanation:
They make the most sense.
From 1838 to 1841 enacted many refrains with the aim of improving economic.
Answer:
Increase
Explanation:
After a scientific research, carried out by both A.F Williams and K.A Lancaster, in 1995, with a title: "The prospects of daytime running lights for reducing vehicle crashes in the United States." These researchers, however, made various conclusions, one of which, amongst other things, stated that Daytime running lights INCREASE visual contrast between vehicles and their background, which enhance their noticeability and detectability.
Therefore, the correct answer is INCREASE.
I'm not sure what question 4 is. If you could add both the picture and the question, that would be great.
