What is the main element in the Carbon cycle?
What is carbon dioxide?
What involves the conversion of gaseous nitrogen to ammonia?
What is nitrogen fixation?
What continuously circulates from the ocean to the atmosphere to the land and back to the ocean in the hydraulic cycle?
What is water?
What is the study of how living organisms and the physical environment interact in an immense web of relationships?
What is ecology?
Who developed ecology?
Who is Ernst Haeckel?
Plants release carbon dioxide into the air through what process?
What is photosynthesis?
What is the conversion of ammonia to nitrate?
What is nitrification?
Water moves from the atmosphere to the land and ocean in the form of what?
What is precipitation?
What are environmental factors involving living organisms?
What are biotic factors?
Which term is more inclusive ecosystem or community?
What is an ecosystem?
Carbon dioxide is returned to the atmosphere by what process?
What is respiration?
Roots absorb either nitrate or ammonia and then incorporate the nitrogen in these molecules to plant proteins and nucleic acids during what process?
What is assimilation?
Where do clouds form when water evaporates and it eventually condenses?
What is the atmosphere?
What are members of the same species that live in a prescribed area at the same time called?
What are populations?
What includes interactions between organisms an their physical environment?
What is an ecosystem?
Combustion occurs and molecules rapidly oxidize to form what?
What is carbon dioxide?
What is the conversion of biological nitrogen compounds to ammonia called?
What is ammonification?
What is the loss of water vapor from land plants?
What is Transpiration?
What includes all of Earth’s organisms?
What is the biosphere?
What uses the tissues of other plant and animal organisms as a source of food energy?
What are consumers?
Proteins, carbohydrates , and other organic molecules that are essential to life contain what?
What is carbon?
What is the reduction of nitrate to gaseous nitrogen called?
What is dentrification?
Water seeps down into the soil to form what?
What is groundwater?
What is an organisms role within the structure of the community?
What is an ecological niche?
What occurs when two or more individuals require a resource at the same time?
What is competition?