Pollination is the transfer of pollen from a(n) to a receptive ovary; stigma stigma; ovary stigma; anther anther; stigma none of the answers are correct.

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

Which enzymes break down carbohydrates?

Which of the follow describes a disadvantage secondary sources have compared to primary sources?