<u>Answer:</u>
All of the above mentioned options can be used by scientists to date the sediment layer they are found in.
<u>Explanation:</u>
- Rock fossils, animal fossils, etc.found in the sediment layer can be used to determine the age of the sediment based on the period of the existence of that animal or the period of formation of the rock.
- Tree rings clearly exhibit the age of the tree. Hence, a sediment layer with the evidence of tree rings can tell the age of the sediment layer.
- An amalgamation of the data obtained from the animal growth rings and the period of existence of that specific animal species can be used to calculate the age of the sediment.
- The intensity of radioactivity left in the isotopes clarifies how old the isotope is.
- The age of mineral elements can be determined exactly with the help of processes like Potassium-Argon dating, Uranium-Lead dating, etc.
- Thus it would be easy to determine the age of the sediment layer containing mineral elements.
Answer:
Renewable resources.
Explanation:
Renewable resources can be defined as those natural resources that can be replenished naturally. Such natural resources are unlimited in nature and can be renewed naturally.
In simple terms, one can say that renewable resources are those natural resources that can be used regularly and will never run out as they can get renewed naturally. Some examples of renewable resources are sunlight, water, wind, etc.
Therefore, the correct answer is renewable resources.
<span>it was a source of food and trade</span>
Answer:
Three Gorges Dam becomes popular tourist site. The Three Gorges Dam, the largest of its kind in the world, in central China has become a popular tourist site which attracted an estimated 100,000 tourists in the week-long May Day holiday, a travel agency executive said on Friday. The Three Gorges Dam includes three areas: the dam itself, a hydroelectric, and a system of locks. The height of the Three Gorges Dam is 185 meters (607 ft) above the sea level. The dam is about 2,300 meters (7,546 ft) long and about 115 meters (377 ft) wide.
Explanation:
hope this is enough :)
