Table sugar is sweet, but it did not contain starch. why is this?

Table sugar usually comes in two variety; A derivative of cane sugar, or a synthetic compound. In either case table sugarbis not made from complex carbohydrates like starch, but rather uses the simple carbohydrates, which would include sucrose.

If you remove all the lions from the savanna it will lead to a increase of gazelle and a increase of cheetahs becasue of no competition