Energy flow

Question 1

What is an ecosystem, niche, community, population?

Answer 1

ecosystem-is a system that environments and their organisms form through their interaction
niche- is a role and position a species takes up in its environment which includes its food, interaction with other species etc
community- is a group or association of populations of two or more different species occupying the same geographical area at the same time
population- consists of all the organisms of a given species that live in a particular area.

Question 2

What is a trophic level?

Answer 2

position in the food chain

Question 3

What are producer & consumers?

Answer 3

Producers- autotrophs, make their own food and do not depend on any other organism for nutrition, use photosynthesis to make food
Consumers- have to eat to gain energy or they will die. There are four types of consumers: omnivores, carnivores, herbivores and decomposers.

Question 4

What are decomposers?

Answer 4

organisms such as bacteria and fungi that break down dead organisms and waste materials into nutrients usable by the producers.

Question 5

What is the equation of ecological efficiency?

Answer 5

energy available to a trophic level/energy consumed by previous trophic level * 100