MUST ANSWER A AND B!! Part A:
What evidence did Darwin have to support the theory of evolution?

A. breeding organisms with favorable traits
B. fossil evidence and observations of living organisms
C. recorded evidence of other scientists

PART B:
A. recorded evidence of other scientists
B. These organisms developed similar traits because their environments were at one time similar.
C. The organisms share a common ancestor from long ago.

Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.