Answer:
C
Explanation:
The US is an indirect democracy due
The correct answer is letter A
When talking about agricultural production in the feudal world, we soon remember that working on the land sought to meet basic needs. Unlike in other times, medieval agriculture had a low productive performance that limited the occurrence of natural exchanges and trade. In general, this subsistent characteristic is related to the poor quality of the seeds used and the limitation of the instruments and techniques of the time.
Despite the relevance of these factors, we must take into account that the medieval peasants also used the system of crop rotation. In this technique, a lot of arable land was divided into three equivalent portions. In the first two, the servant established the planting of two distinct cultures. The remaining lot was not used, so that the land plot was not completely worn out.
Answer:
It is true that the protostome developmental sequence arose just once in evolutionary history.
Explanation:
During evolution the Bilateria had been into two major divisions. One was the protostomes and another was the deuterostomes. It is all categorized during the embryonic development.
It is differentiated by the formation of anus and mouth. The protostomes include the annelids, molluscs and arthropods. Studies reveal that Protostomes are derived from their prebilaterian ancestors.
The protostome developmental sequence has been aroused only once during evolution which lead to the evolution of more than thousands of new species. They then were subdivided into two major group, namely Lophotrochozoa and Ecdysozoa.
Answer:
The answer to the first one is a. Harvey described the way the human body works in a way that made it seem less mysterious.
The answer to the second one is b. Newton was the first to show that nature is ruled by a set of laws that allow us to predict outcomes.
Explanation:
William Harvey was the 1st one to accurately find and explain the system of blood circulation inside the human body.
Prior to his findings, how the human body functions was a total mystery and many people believed in religious superstitions and miracles.
Sir Isaac Newton discovered the the idea of gravity, rules of motion, calculus and any more. He is regarded as one of the greatest physicists of all human history.
But his 3 laws of motion allowed to realize a lot of people that the nature works according to a set of natural laws and not because of the will of some deity or a god.
