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.
The answer is C.
On the map, C points to the Dead Sea. (thats my explanation i guess)
^^^ THE ANSWER IS NOT CORRECT ON EDGE ^^^
Answer:
Bolívar is a supporter of Enlightenment ideas because he believes in the concept of equal rights. He personally took steps to free the enslaved persons his family owned, and to end slavery in Gran Colombia.
Explanation:
Answer:
Prices are often volatile due to inelastic demand. e.g if there is a ‘good harvest’, supply will increase and there will be a fall in the price of primary products. However, because demand is inelastic, this would lead to a fall in revenue.
coffee-supply-price-growers
The volatile price of coffee – can make planning difficult.
Supply can also be volatile due to weather and disease. For agricultural crops, there is always a risk of crop failure, which could cause economic hardship in one particular year.
Limited resources. One day developing economies may run out of its finite primary products, e.g. precious metals could become scarce. Without diversification, this would leave the economy with a void.
Discourages investment in other aspects of the economy. Concentrating on primary products does not always help the long-term development of an economy because it can contribute towards a lack of investment in other aspects such as education and industrial production. Comparative advantage can change over time. It’s important to not just look at the present comparative advantage, but prospects for next 10 or 20 years.
There is a low-income elasticity of demand for primary products. With a rise in global income, there is a proportionately smaller percentage rise in demand for primary products. (agricultural products tend to be income inelastic). Therefore, if you produce primary products, you may see lower rates of economic growth than countries who produce manufacturing goods – which are more income elastic. The Prebisch-Singer hypothesis suggests that countries who concentrate on primary products are vulnerable to a declining terms of trade.
There are 5 points
Hope it helps!!!
