Answer: b. Asteroids can cause great damage if they collide with Earth.
Explanation:
The main idea is that asteroids can cause great damage to earth if they collide with our planet. This is what the entire article was centred around starting with an example of the effects of the last time there was a collision with Earth.
It then goes forward to talk about the chances of being hit by another asteroid and what scientists will do if the Earth is at risk of being hit by one which shows that the whole point of the article is the damage asteroids can cause on earth and why this should be avoided.
Green house effect is the trapping of heat by some gases ! mainly in our earth this is increasing due to CO2 !
The name of the act and the process that created and divided India, Pakistan and Bangladesh is the 'Partition of India'. It happened in 1947, when the till then one country, was divided in three parts and gave birth to the today's Republic of India, Islamic Republic of Pakistan and People's Republic of Bangladesh.
It would refer to a number of related phenomena and patterns of change.
Answer: Small, stable population
Explanation: Superpowers tend to have a larger more bulky population compared to their counter-parts with a small more controllable population, (hence, stable.)
