The number of people per square mile is the population density
Hey there!
Airplanes must be pressurized when flying at high altitudes so that the oxygen levels stay normal for us to breathe. The higher you go up, the thinner the air gets, which causes breathing problems for us humans.
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Answer:
a. plants are preserved as fossils
Explanation:
Through the passing of time, the dead bodies like plants or animals rest in soil, and the cover by different particles, with the time they can be compressed and form a soil layer. If the environment condition changes they get caught in one soil layer. If this process is repeated constantly, so a new soil layer will be formed. So passing the time, different soil layers will have different animals or plants. With the help of isotopes, the scientist can determine the years of each layer.
Answer: I and II only
Explanation:
Cover crops are planted in order to protect the soil when the main cash crop is not being planted which means that they are not planted to be harvested and can be planted after the cash crop is harvested.
The two main purposes of cash crops are to protect the soil from erosion and to improve soil fertility. Their presence reduces surface runoff of soil when it rains and slows down rain before it hits the ground at force and splits soil.
Some cover crops are planted to improve soil fertility because they improve the level of nutrients in the soil and they can also be ploughed before they mature causing them to decay and add organic matter to the soil.
Answer:
The process of globalization in dependent on the flow of trade and commerce and the spread effects are viewed in terms of massive terms of automation.
Explanation:
- The international trade and deforestation, along with the climatic changes are an important aspect of understanding the globalization processes. As the movement of traditional societies to the full-grown urban and cosmopolitan world globalization has created waves in the international trade of goods and resources.
- As a result, it had led to the exploitation of natural resources to its best and hence it has led to the massive deforestation of grasslands and tree lands. At times certain items that are the safeguard of the interests of the nation are kept away from these trade like country soils etc.
- Climatic changes thus also get along with this type of process as the global temperature rise and the earth starts to heat up and the rise in the levels of temperature from 1 to 3 degrees and further depletion of glaciers from the poles has set the stage for another ice age event on earth.
