a model that shows amounts of energy or matter at each level in a food chain
bacteria that are autotrophs may use this process to create energy
a substance that can enter the atmosphere from decomposition or animal waste products
used for energy to grow and maintain life
organisms that eat meat and plants
meat eaters
plant eaters
producers use this process to create energy
a process where nitrogen is taken up by plants
organisms that must eat to obtain energy
carbon
glucose
ecological pyramid
herbivores
photosynthesis
heterotrophs
carnivores
assimilation
chemosynthesis
omnivores