Options are:
1). pollination.
2). heat energy.
3). energy.
4). nutrients.
5). bloom time.
6). sunlight.
7). Time and energy.
8). Energy..
Given those answer options, answer the question: Fact 1: Plant reproduction requires pollination. Fact 2: Angiosperms are the flowering plants. Given the two facts above, what does angiosperm reproduction require?
A:
1).