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Essay on Solar Energy and the Energy Crisis
In the oceans, the Carboniferous is called the Golden Age of Sharks, and ray-finned fish arose to a ubiquity that they have yet to fully relinquish. Ray-finned fish probably prevailed because of their high energy efficiency. Their skeletons and scales were lighter than those of armored and lobe-finned fish, and their increasingly sophisticated and lightweight fins, their efficient tailfin method of propulsion, changes in their skulls, jaws, and new ways to use their lightweight and versatile equipment accompanied and probably led to the rise and subsequent success of ray-finned fish in the Carboniferous and afterward. , which are amoebic protists, rose to prominence for the first time in the Carboniferous. Reefs began to recover, although they did not recover to pre-Devonian conditions; those vast Devonian reefs have not been seen again. did not appear until the . Trilobites steadily declined and nautiloids familiar today, and straight shells became rare. The first , which were ancestral to squids and octopi, first appeared in the early Carboniferous, but some Devonian specimens might qualify. Ammonoids flourished once again, after barely surviving the Devonian Extinction. This essay is only focusing on certain prominent clades, and there are many and . The early Carboniferous, for example, is called the Golden Age of , which are a kind of , which is a phylum that includes starfish. The crinoids had their golden age when the fish that fed on them disappeared in the end-Devonian extinction. Earth’s ecosystems are vastly richer entities than this essay, or essay, can depict.
Essay on energy crisis english | …
The earliest economic school of thought was French, and its practitioners were called . They formed the first and so-far only economic school that rooted economic activity and wealth in energy terms. Physiocrats worked before the science of energy was invented, but they understood that land was the basis of wealth, or more specifically, the crops, timber, metals, and other resources that could be wrested from them via labor (AKA ""). Physiocrats were opportunists who developed economic theories that they planned to profit from, in order to climb into the aristocracy. The first English economist of what later became the was arguably who, like his successors, derived theories that he planned to benefit from. They either tried to join the rising rich classes themselves or performed ideological services on their behalf to curry favor. There was nothing of the disinterested scientist in their work, but they became ideological warriors of the rising capitalist class. It became Karl Marx’s task to name that rising class; he called them the . Preceding the nominal classical economists was , who is called a mercantilist philosopher today, but he was really one of the most honest classical economists in describing the early forces of capitalism, of forcing peasants off the land and enslaving them to market forces.