Science

2. Web : a system of interlocking and interdependent food chains
6. : A unit of energy of one thousand calories (equal to one large calorie)
8. : is often defined as any organism that eats only plants
10. : is an organism, either a green plant, which is part of the first level of a food chain
11. : Herbivores that feed on green plants in a food chain are called primary consumers, and carnivores that feed on herbivores are , secondary consumers. Carnivores that feed on other carnivores are called , tertiary consumers
12. : is an animal that eats both plants and animals for their main food

1. level : each of several hierarchical levels in an ecosystem, comprising organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy
3. : an animal that feeds on carrion, dead plant material, or refuse
4. : Animals that subsist on a diet consisting only of meat
5. : an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material
7. Pyramid : is a graphical model of energy flow in a community
9. : the total mass of organisms in a given area or volume