This is a living factor in an ecosystem

This pyramid shows the total amount of living tissue at each level

This process is where water soaks into the soil

In this relationship, one organism benefits and the other is not affected

This biome has long, cold winters and short summers

This level of ecological organization includes all biotic and abiotic factors

This pyramid shows how energy is passed from organism to organism

In this cycle, decomposers break down material returning carbon to the soil

In this distribution, organisms gain protection but have to deal with competition

This biome is warm and has lots of rain

This species has a large impact on an ecosystem

This pyramid show the relative number of each organism

This is found mostly in the atmosphere and rock

This limiting factor comes from unusual weather and seasonal changes

This zone in the marine ecosystem has high pressure and murky water

This organism feeds on once living plants, animals, and decomposers

This percentage of energy is passed down from organism to organism

This is a common example of a nitrogen-fixing bacteria

In this type of growth, population constantly grows

This is your impact on the Earth

This organism is a consumer with a large diet

This shows the level an organism is in a pyramid

Nitrogen-fixing bacteria turns this into Nitrite

This states that no two species can be in the exact niche or habitat at the same time

This when chemicals move up the food chain and increase in concentration