Organisms that are at risk of dying out:
Endangered
Loss of a species:
Extinct
Gradual change of an ecosystem:
Succession
Change that happens in a new area where no soil or organism exists:
Primary Succession
Change that happens when an ecosystem is disturbed:
Secondary Succession
Name of the first organisms that appear in a new ecosystem:
Pioneers
Examples of pioneers are:
mosses, lichens and algae.
Relationship of organisms where both get benefits:
Mutualism
Relationship between organisms where one gets benefits and the other one is unaffected:
Commensalism
Relationship between organisms where one gets benefits and the other one is harmed:
Parasitism
Basic unit of all living things:
Cell
A group of some kind of cells that work together:
Tissue
Group of tissue that work together:
Organ
Group of organs that work together:
System
Group of systems working together:
Body
Muscular organ that pumps blood through the body. It has 4 chambers:
Heart
