What are the main characteristics of the age pyramids of developed countries?
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What are the processes that autotrophic beings use to produce organic material from inorganic substances?
What are tropic levels?
What are some examples of interspecific competition?
Explain the main types of waste?
Define predatism?
Define dry mass?
What are societies?
What is a population?
What is inharmonious ecological interaction?
Define ammensalim?
What is harmonious ecological interaction?
What is the formula of the net primary production (NPP)? How does NPP relate to the energy pyramids?