How to Hard-Boil an Egg. Hard-boiling eggs is almost as easy as boiling water, if you know the right process: Cooking eggs too long or too vigorously can result in cracked shells, tough whites, and green-gray, sulfuric-smelling yolks.
Although all flowering plants rely on pollination for reproduction, there is a variation in how plants pollinate. There are two types of pollination called self-pollination and cross-pollination. Self-pollination is the more basic type of pollination because it only involves one flower.
In contrast, cross-pollination is the transfer of pollen from the anther in a flower in one plant to the stigma in a separate flower in another plant. Cross-pollination, therefore, necessarily involves two flowers and two plants.ypes of Pollinators: Abiotic vs. Biotic. Various types of pollination have also been identified based on the vectors of pollen grains or agents of pollination. These pollinators are described under two main classifications: (1) abiotic, i.e, nonliving pollinators, and (2) biotic, i.e., living pollinators.