Aa is lava that forms a thick ,brittle crust . Pahoehoe is a lava that
forms a thin crust. Pillow lava forms when lava erupts underwater.
Blocky lava is kool, stiff lava that does not travel far from thr
eruption site.
Answer:
Q. 41. Basaltic Lava, Q.43. Basaltic magma Q.44. False
Explanation:
Basalt is a mafic extrusive igneous rock, formed by the rapid cooling of Mg and Fe rich lava, exposed at or near the surface of the earth. Thus forming about 90% of the surface lava on earth.
Shield Volcanoes emit lava or magma in the form of viscous basaltic lava. Highly explosive.
Greenland and Antarctica together constitute the 99% of the earth ice caps so, Greenland has about 80% cover as compared to antarctic 98% and both are depleting fast.
The study of geography is also about the way humans and animals interact with their environment and surroundings
Answer:
continental rise
Explanation:
In nearly all instances, it ends at its seaward edge with an abrupt drop called the shelf break. Below this lies the continental slope, a much steeper zone that usually merges with a section of the ocean floor called the continental rise at a depth of roughly 4,000 to 5,000 metres
Answer:
Average life expectancy in most European countries extends well past the age of retirement.
Explanation:
The European Union, or at least most of its members, tend to have relatively good welfare systems. This is the case because of the strong economies of the countries but also because it helps the population, which in turn tends to have positive effects. Some countries are even targeted for migration just because of their generous welfare system.
This situation is very likely to change though as there is a very big chance that the economies of the European countries will not be able to sustain the welfare systems that they currently have. The main reason for this is that the population is aging. With the population becoming older and older, there are more and more people that rely on the welfare system, creating a disbalance in its functioning. On top of that, life expectancy is high and is gradually increasing, meaning that not just more people will rely on the welfare system but also for a longer period of time.
