Answer:
Trilobites
Explanation:
The Phanerozoic Eon is characterized by the presence of organisms that possessed hard shells as an adaptation to the environmental conditions. Among these organisms, the most common hard-shelled animals were the trilobites.
Trilobites were present during most of the Paleozoic Era, which belongs to the Phanerozoic Eon. These animals were marine organisms with remarkable and unique phenotypes.
The body of a trilobite was composed of three segments: the cephalon, the thorax, and the pygidium (tail). In addition, they possessed an exoskeleton composed of chitin, which was the reason behind their hard shells. They shed their exoskeletons to be able to grow.
Trilobites are currently extinct.
The reason why one case of influenza does not confer lifelong immunity is that the virus tends to mutate overtime which makes it unrecognizable to the immune system.
<h3>Why is it difficult to get immunity to influenza?</h3>
Influenza is caused by a virus which tends to mutate overtime in order to stay ahead of medical technology.
As a result, this mutation makes the original virus unrecognizable to the immune system which would then be unable to fight it.
Find out more on natural immunity at brainly.com/question/21480961
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Answer:
b. movement to a higher or lower social status
Explanation:
Vertical mobility -
During the life time of the human being , the movement of the social status of the person , whether to be higher status or lower status , is referred to as vertical mobility.
Hence , the term vertical mobility is used to define the mobility of the social status of an individual living in the society .
Hence , from the given information of the question ,
The correct option is b.
<span>After prophesying about John and Baptist who would be God's messenger to prepare the way for the coming Messiah, we are told that "suddenly the lord you are seeking will come to his temple; the messenger of the covenant, whom you desire, will come," says the Lord Almighty." Whereas John and Baptist was merely the messenger who would prepare the way before the Messiah, Jesus himself was the very Lord - the messenger of the new covenant.
Jesus was messenger of the new covenant, but much more than that, Jesus is very Lord whom Israel seeks. As other have said, Jesus was no mere mortal, no mere prophet. Check out the link below for the full names and title Jesus, as the Son of God.</span>
The Wright brothers flew their first plane in 1903 and the first continental railroad opened in 1869 if you subtract those two you would get 34 years after
