Gas retailers, though, grouse that Costco uses gas as a loss leader to get people into the store. Even though Costco has just 0.16% of the 170,000 places you can fill up your car in the United States, its model is roiling the industry.
The release of fish eggs and their subsequent fertilization is called spawning. Most marine fish reproduce by releasing thousands of small eggs into the water for external fertilization. Egg-laying fish have a variety of methods for releasing the eggs. Some fish scatter eggs, which are fertilized by the male fish as they fall. Other fish attach the eggs to a surface, where they are then fertilized as they are released. Some fish release eggs into a nest of bubbles blown by the male fish.
Called regeneration, it is a form of asexual reproduction that is used by starfish. Parthenogenesis involves the production of eggs that do not need to be fertilized in order to create offspring. This occurs in certain species of fish, frogs, lizards and some insects.sexual reproduction is the reproductive process that involves only one organism and results in two or more organisms. Single celled organisms, such as archaea, bacteria and protists, commonly reproduce asexually. Certain fungi and some plants do as well.