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: A) 12 hours during the day
Explanation: There are 8 lunar phases. The new moon phase is the first one and it last on avarage 12 hours, from 6 am to 6 pm which technically is day time.
Answer:
A.
Explanation:
Based on the information provided within the question it can be said that the best option in this scenario for finding the age of these fossils would be to collect a sample of the volcanic ash layers above and below the fossil layer and date the volcanic deposits with Argon dating methods. Such a method would be Potassium-Argon dating in which the product of the radioactive decay of an isotope of potassium (K) into argon (Ar) are compared in order to calculate an estimated age.
Because the French nobility, king Louis XVI and the clergy had one major thing in common. All of them enjoyed and lived a lavish lifestyle full of riches, good food, and different luxuries that the average citizen in France could not even imagine perhaps. This is also the reason why they were criticized most.
