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 of apple trees and other fruit trees. Pollination is an important topic when growing fruit trees because many - but certainly not all - varieties require pollination from a compatible donor tree before they can set fruit. However it is a natural process that almost always just works. Some simple rules of thumb: 1  If you are in an urban environment you probably won't need to worry about a pollination partner for your apple tree - there will usually be compatible apple trees or crab apple trees in neighboring gardens and hedgerows.