The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms. When a neutral molecule has a positive area at one end and a negative area at the other, it is a polar molecule.
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The evidence supported from the comparison of modern humans and extinct hominids's remains, mostly skeletons an skulls can be easily seen in the gradual changing in the species as they faced different environments. Starting from the earliest hominids, until the modern humans, the basics of the body structure is the same, but as the time was passing, and as the hominid species moved into different environments they show slight modifications. A nice example are the Homo sapiens and the Homo neanderthalensis. Both evolved from the Homo erectus, and both were very similar, but the Homo sapiens lived in an open savanna, while the Homo neanderthalensis in a cold forested region. Because of this, the Homo sapiens became thinner, taller, and also the brain started to develop in a way that was allowing more social interaction, and that gave the shape of the brain in modern day humans, while the Homo neanderthalesis became slightly shorter, bulkier, and the brain developed in way where it was more focused on hunting and performing strategies, and that gave them the more ape-like appearance if their skulls.
Hi there! The answer is D.
What does a "carbon footprint" refer to?
The amount of carbon dioxide a person produces. In other terms: the carbon footprint indicates the total emission of carbon by an individual or organisation.
The correct answer is - It allowed Darwin to study characteristics of similar species.
HMS Beagle was the ship of Royal Navy. It was used by Charles Darwin to sail around the world during 1931-1932. He traveled around the world from 26 December 1831 to 27 February 1832. During voyage, he came across rich variety of animal and plant species. He found many similar species on different location due geographical isolation.