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.
For some plants, pollination can occur through the help of wind or water. These plants either do not have attractive flowers or lack nectar, and are designed to have pollen transported by wind or water. Self-pollination is a type of pollination that does not need the help of others. Pollen grains can transfer from the stamen to the pistil by itself. These plants are fertile on their own, although you will find only a few plants that have this characteristic.