What is the nitrogen cycle?
What is a community?
What are the main limiting factors for the growth of a population?
What is the phytoplankton?
Explain the typical conformation of the age pyramids of underdeveloped countries?
What are societies?
Can the amount of available energy in a given tropic level to be larger than the available energy in inferior tropic levels? What does that condition means to the conformation of the energy pyramids?
Why are less biodiverse ecosystems under the risk of suffering deep biological harms if submitted to even small changes?
Define commensalism?
Give an account of the classification of ecology?
What is parasitism?
What is Ecology?
What are the main types of waste?
How is energy transferred along a food chain?
Which is the autotrophic group responsible for the production of most part of the molecular oxygen of earth?