The period of human evolution has coincided with environmental change, including cooling, drying, and wider climate fluctuations over time. How did environmental change shape the evolution of new adaptations, the origin and extinction of early hominin species, and the emergence of our species, Homo sapiens? (‘Hominin’ refers to any bipedal species closely related to humans – that is, on the human divide of the evolutionary tree since human and chimpanzee ancestors branched off from a common ancestor sometime between 6 and 8 million years ago.)
How do we know Earth’s climate has changed? How quickly and how much has climate changed? One important line of evidence is the record of oxygen isotopes through time. This record of δ18O, or oxygen stable isotopes, comes from measuring oxygen in the microscopic skeletons of foraminifera (forams, for short) that lived on the sea floor. This measure can be used as an indicator of changing temperature and glacial ice over time. There are two main trends: an overall decrease in temperature and a larger degree of climate fluctuation over time. The amount of variability in environmental conditions was greater in the later stages of human evolution than in the earlier stages.
Answer:
Transporting goods between mountains and coastal areas was nearly impossible.
Explanation:
In the early 1800s, North Carolina was in strong agricultural production and was trying at all costs to establish itself as a strong state. For that, it would be necessary to solve some problems related to infrastructure and even local politics. In relation to the state's infrastructure, one of the biggest problems, which took years to be solved, was the difficulty of transporting goods between mountains and coastal areas, the difficulty was so great that it reached the verge of impossibility and made this agenda one of the most important be resolved by the local political body. This problem took years to be solved, because the population refused to pay high taxes for this.
Answer:
<h3>Establishing federalism.</h3>
Explanation:
- The founding fathers of the US Constitution strongly feared and had a distrust in a strong central government. The framers of the Constitution added the Tenth Amendment to the Bill of Rights to emphasize the limited power of the central government.
- They firmly believed in establishing federalism as they wanted the power and liberty to be directly in hands of the states and the people. Thus, the Tenth Amendment of the US Constitution states that <u>"The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people."</u>
