https://docs.google.com/document/d/1Xyx5mPMmLW4xpfNGq32O2zua7xM88tPM0Th_h_dCN_I/pub
Homework
3/4 - Copy and define vocabulary words in NB.
1. biotic factor - a living thing, as an animal or plant, that influences or affects an ecosystem.
2. abiotic factor - are essentially non-living components that effect the living organisms of the freshwater community.
3. ecosystem - a system which is formed when a community of organisms interacts with the environment.
4. community - a social unit of any size that shares common values.
5. density - a measure of mass per unit of volume. Density is a measure of mass per volume. The average density of an object equals its total mass divided by its total volume.
6. producers -they produce their own food! They do this by using light energy from the Sun, carbon dioxide from the air and water from the soil to produce food - in the form of glucouse/sugar.
7. herbivores - an animal that gets its energy from eating plants, and only plants.
8. parasitism - relationship between two species of plants or animals in which one benefits at the expense of the other, sometimes without killing it.
9. biosphere - layer around the earth which holds life. Our biosphere may be finite, but it varies considerably and its potential size is unknown.
10. limiting factor - any condition required by a species that becomes absent in a habitat.
