Locus are a larger version of a grasshopper. When they breed they do it abundantly and they can cause serious crop damage when they fly in swarms. By the way this would be more of a science question. ;)
Your second question is a history one: I believe the answer is Nelson Mandela. He was the first democratic president of the Republic of South Africa. He was "sworn in" in 1994 at the age of 74 or 75 I believe.
The Ordinance of 1785 put the 1784 resolution in operation by providing a mechanism for selling and settling the land, while the Northwest Ordinance of 1787 addressed political needs. The 1785 ordinance laid the foundations of land policy until passage of the Homestead Act in 1862.
so the answer is b
hope this helps
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