What is a population?
Define population?
What is an ecosystem?
Can food chain present quaternary consumers without having secondary or tertiary consumers?
Explain the analyses provided by the study of human age pyramids?
What is numeric pyramid?
How does npp relate to the energy pyramids?
What are primary consumers?
What is the respective importance of nitrogen for the living beings?
What is age pyramid?
What is parasitism?
Explain how are the grasslands of north america and of south america respectively called?
What are the typical vegetation and the typical fauna of the tundras?
What are the destinations of the organic material fabricated by the producers?
What is plutonium reprocessing?