Answer:
B.
Explanation:
The ice age ended around 11,500 b.c and rounding that to the nearest answer is the best so, B.
Different ways are:
(i) Multiple cropping can be done. ...
(ii) In Palampur farmers grow jowar and bajra during rainy (Kharif) season.
(iii)They grow potato between October and December.
(iv) During winter, they grow wheat.
(v) It is possible due to the self-developed system of irrigation.
William Levitt used his military experience in order to change the home-building industry. Levitt created several "Levittowns" especially in the Northeast part of the US. Just like in the military, these houses would be uniform in look and size. This helped to develop the modern day concept of a suburb and promoted uniformity during the 1950's.
B. Ecosystem because there abiotic and biotic things.