Igneous rocks are made mainly of compounds of silicon and oxygen. Although there are many more elements that can be found in these types of rocks, the compounds of silicon and oxygen are what makes the most of these rocks.
Answer:
e. 1.588 billion years
Explanation:
the sequence of rocks IS 1.588 billion years
Answer:
The Sun warms our seas, stirs our atmosphere, generates our weather patterns, and gives energy to the growing green plants that provide the food and oxygen for life on Earth.
Explanation:
Answer:
Soils are the key ingredient for the plants and crops to grow. A large amount of soil is eroded every year due to the practice of farming. This is about 25 billion tons of soils.
Due to the various type of agricultural practices, the topsoil comprising the valuable minerals are continuously eroded by factors such as wind and water. This results in the increasing loss of soil fertility, and also it can lead to the occurrence of droughts, sandstorms, and dust bowls.
Dust bowls are the region where there occurs no rainfall and absence of vegetation, and soils are eroded drastically making a sandy dust environment, and affecting the ecosystem.
In order to prevent these effects, certain steps must be taken, and they are as follows-
- Planting more trees and crops so that the wind cannot cause much impact on the area.
- The waste vegetative particles and matters must be allowed to distribute evenly over the surface of these areas, so that wind cannot easily transport these sediments.
- Mulching of the soil must be done.
- By constructing the retaining walls.
Answer:
Option (E)
Explanation:
Remote sensing is usually defined as a process by which the information associated with the physical characteristics of the earth's surface can be obtained without making any physical contact. The radiations that are reflected and emitted from the features on the earth's surface are monitored at a certain distance. This technique involves the use of specialized cameras that can take images that are helpful in the study of the surface.
Thus, the correct answer is option (E).
