- Grade 11 and 12 Mathematics (Moderator: geoffrey)
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Author Question: Refer to the stock table to answer the questions. Where necessary, round dollar amounts to the ... (Read 610 times) |
- Grade 11 and 12 Mathematics (Moderator: geoffrey)
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.
There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.
The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."