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.
Pollination. Pollination is a way of reproduction for flowering plants. The word comes from the word pollen, which is basically the sperm of the plant. The pollen makes contact with the plantâs stigma and then the fertilization process starts. It is basically what sex is to plants. The process of pollination was actually discovered in the 18th century by a man named Christian Sprengel.