Explain why the tropical forests are also known as stratified forests?
what is transgenic food and its health hazards?
Define bioremediation?
Why is leguminous crop rotation used in agriculture?
What are the main characteristics of the age pyramids of developed countries?
What is the nitrogen cycle?
Explain why is cannibalism an inharmonious intraspecific ecological interaction?
What is competition? Which type of ecological interaction is competition?
What are primary consumers?
Define pollution?
Define the nitrogen cycle?
Is the upward move of the warm air good or bad for the dispersion of pollutants?
What are tropic levels?
What are some economic applications that can be generated by very biodiverse ecosystems?
Besides mercury which other heavy metals cause toxic pollution?