Answer:
Fault lines are a fracture along which the crust has moved.
Answer: a)Copper and tin
Explanation: Copper and tin came into use at very early ages in the form of utensils, ornament etc. They were discovered in a way that it is possible for the people of early ages to extract these metals and melt them to give it some kind of shapes and utilize it for their daily living.People also started using these metals in the form of alloys as well which expanded the used of metals like copper, tin , bronze etc. Thus, correct option is copper and tin.
Answer: B. participate in the hydrologic cycle
Explanation: Residence time of water is the rate of water in a water reservoir such as the ocean or the atmosphere divided by how fast more water is added to it or lost from it.
While residence time is thousands of years in oceans, water in the atmosphere has a short residence time of abut 10 – 11 days. This allows it to participate in the hydrologic cycle which includes evaporation and precipitation. Water in the atmosphere precipitates as snow or rain, returning to other water reservoirs.
Answer:
(a) Desert- In a desert environment, the temperature is relatively very high during daytime due to high absorption of sunlight and at night it again cools down. There is little or no precipitation here. This region includes the equatorial and some parts of the tropical region.
(b) Arctic tundra- This region lies in the higher latitudinal areas extending from the arctic to the extreme poles. The temperature here is extremely cold and precipitation is low. The plants and trees here are short in height.
(c) Temperate grassland- These are the mid-latitude areas covering the extensive grasslands of both the northern and the southern hemisphere. The temperature and precipitation level here are both moderate.
(d) Tropical rain forest- These are the regions that covers the vast rain forest areas in the tropical region of both the hemispheres. The temperature here is high is relatively high and high moisture content. As a result of which the rate of evaporation is high and rainfall is maximum. The region is rich in diverse trees and plants species.
(e) Temperate deciduous forest- These are the regions covering the mid latitudes that are rich in the deciduous forest. These are the dry forests comprised of various plant species. The temperature in this region is very moderate and summers are comparatively much cooler. Precipitation in this region is also quite moderate.
