Answer:
A. A majority of scientists agreed with it
Explanation:
The famous theory called the theory of common descent, states that all the living organisms of the earth have arisen from a common ancestor. This notion was first proposed by a French mathematician,Louis Maupertuis duirng 1740s who was of the view that all organisms had a single ancestor and evolutionary process with the passage of time resulted in the specie diversification.
After that, in 1790s another philosopher Immanuel Kant, suggested that all organisms seem to have a common ancestor. In the same period of 1790s, another scientist , Erasmus Darwin who was the grandfather of Charles Darwin also suggested that all the organisms might have a single ancestor who went through the process of evolution to bring all the majesty into life.
Charles Darwin was the first scientist who worked on this notion for alot of time and proposed the theory of common descent,in his book, On the Origin of Species.
After it, many scientists got agree with this theory such as, Vernon Kellogg in 1907 and T. Ryan Gregory in 2008 and many others explain that no reliable observations exists which contradicts the theory of common descent.
Therefore, option A is the best option.
Hope it helps!
Blood is pushed through the organism by the heart, and brings nutrients and oxygen to our tissues. It also takes away waste and carbon dioxide from tissues.
In living things, there are 6 common elements that can be found: carbon, hydrogen, oxygen, nitrogen, sulfur and phosphorus. Among these, the major ones are carbon, hydrogen, oxygen and nitrogen.
The most important of all that characterizes organic matter from the rest, is the presence of carbon. Carbon is a versatile element because it can bond to itself to an unlimited length. Because of this, it makes itself as host to other functionalities like hydroxide, amines and many more. The combination of a length of carbon chains with other of these major elements make up the basic compounds that our body needs. Compounds like carbohydrates, lipids, hormones, proteins and even our DNA and RNA strands are made up of these major elements.
