Niche

in ecology a niche is the role that a certain organism plays in its environment. For example a trees niche is that it provides shade for surrounding animals, it absorbs the sunlight and creates oxygen, and it provides a home for insects and birds. 

Mutualism

Humans have thousand upon thousands of bacteria inside out intestinal tracts that help us digest our food. This kind of relationship is known as mutualism, a relationship where organisms of two different species benefit from each other.  Other examples of this kind of relationship include flowers and bees, orchids and mycorrizae, and the zebra and the ox pecker.

Eubacteria

This small section of the desk top holds thousands of bacteria, and all of them can classified as eubacteria. Eubacteria are prokaryotic organisms, meaning they do not have a nucleus. These bacteria can be found on everything we touch, eat, drink, and they are even inside of  us, helping us digest our food. But, these bacteria can also kill a lot of people if we are not careful. 

Vestigial Structures

A vestigial structure is any part of the body that has lost its original function over time because of evolution. Human body is a good example of a vestigial structure because it is not a needed or used part of the human body. Other examples of vestigial structures include the appendix, tonsils, ear muscles, and male nipples.  

Littoral Zone Organism

The Littoral Zone is the part of the ocean, river, or in this case lake, that is close to the shore and in many cases is not always covered in water due to the changing tides. These snails are a good example because they can be found on the muddy banks of Queen Lake and climbing up the tall grass in the creek. These organisms are special because they are able to survive both in and out of the water with ease. Other examples of Littoral zone organisms include starfish, sand dollars, flowers, tall grasses, and crabs. 

Genetically Modified Organisms

Tomatoes were often genetically modified in order to let them ripen on the plant before picking them so that they can reach their full flavor, before they were genetically modified they were picked while they were still green and then ripened artificially. There are many genetically modified organisms that we eat and see today, including corn, soybeans, ingredients in baby food, and even chocolate. 

Asexual reproduction

No bread does not reproduce, but the yeast in bread does reproduce asexually. Asexual reproduction happens through the process of mitosis and the daughter cell is an identical copy of the parent cell. All single-celled organisms reproduce asexually and some more complex organisms like jellyfish, starfish, and some sea sponges do also.