Vocabulary
organism, energy, food chain, food web, food pyramid, ecosystem, producer, photosynthesis, consumer, herbivore, carnivore, omnivore, decomposer, nutrient, primary, secondary, tertiary, carbon, nitrogen, energy pyramid, bacteria, algae, phytoplankton, food web, ecosystem, species, herbivores, omnivores, predator, prey, apex predator, invertebrate, vertebrate, symbiotic, microorganism, decomposer, producer, consumer, energy, photosynthesis, habitat, niche, symbiosis, commensalism, mutualism, parasitism, biotic factors, abiotic factors, ecology, predation, relationship, predator, prey, overpopulation, keystone species, intraspecific, interspecific, indirect competition, exploitative competition, invasive species, biodiversity