biochem

• Producers can make their own food from simple substances like water and carbon dioxide
• Primary consumers eat the producers and are herbivores
• Tertiary consumers eat the secondary consumers
• Decomposers feed on dead material
• A species is a group of organisms that can interbreed and produce fertile, viable offspring
• Members from one species cannot create fertile, viable offspring with members from a different species
• Population: a group of organisms of the same species living in the same habitat at the same time
• Limiting factors are any factors in an ecosystem that limit how quickly or how large a population can grow
• Natality is the population's birth rate
• Mortality is the population's death rate
• Carrying capacity is the maximum population size that an ecosystem can support