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.
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The goal of philosophy is: A. to pursue truth.
<h3>What is philosophy?</h3>
Philosophy can be defined as a systematized study of general and fundamental nature of reality, existence, and questions, such as those about mind, knowledge, ethics, existence, true, right and wrong, reasoning, values, and language.
<h3>The pillars of philosophy.</h3>
Basically, there are different types of philosophy and these include the following:
- Theoretical philosophy (metaphysics and epistemology).
- Practical philosophy (social, ethics, and political philosophy, and aesthetics).
In conclusion, we can reasonably infer and logically deduce that the goal of philosophy is to pursue truth.
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The year 1492 marks a watershed in modern world history. Columbus's voyage of discovery inaugurated a series of developments that would have vast consequences for both the Old World and the New. It transformed the diets of both the eastern and western hemispheres, helped initiate the Atlantic slave trade, spread diseases that had a devastating impact on Indian populations, and led to the establishment of European colonies across the Western Hemisphere.
This section identifies the factors--including rapid population growth, commerce, new learning, and the rise of competing nation-states--that encouraged Europeans to explore and colonize new lands. It explains why Portugal and Spain were the first to become involved in overseas exploration and why England and France were slow to challenge Spain’s supremacy in the Americas.
Fluid intelligence refers to the ability to reason and think flexibly.
Ancient Greece had a Mediterranean climate; their summers were hot and dry. The only thing keeping their weathers nice and breezy being the Mediterranean waters.
