Answer:
The Battle of Gettysburg, fought from July 1 to July 3, 1863, is considered the most important engagement of the American Civil War. After a great victory over Union forces at Chancellorsville, General Robert E. Lee marched his Army of Northern Virginia into Pennsylvania in late June 1863.
Explanation:
Answer:
B. Mesosphere
Explanation:
The Mesosphere is the layer of the atmosphere that protects the Earth from meteoroids. It is also the coldest layer of the atmosphere. Below it is the stratosphere and above it is the thermosphere.
Answer:
Explanation:
Yes, earth provides all materials to the people to lead a reasonable life. The earth provides renewable as well as non-renewable resources, which can be useful for generation of thermal and electrical energy, source of food and raw materials required for the purpose of construction. But with the increase in the population worldwide, the resource utilization will increase and possibly the resources will be limited in future.
For example, the use of fossil fuels for the purpose of thermal and electrical energy generation and increase in the dependency worldwide is likely to limit the available concentration of fossil fuels on earth and these resources will not be available in future.
According to most scientists it was several factors involved. But the main cause was b) changes in the earth's orbit which occurs every 10,000 to 15,000 years. Other contributing factors are changes in the ocean's currents and major shifts in platonic plates of the planet.
