Biogeochemical Cycles
Biogeochemical Cycles: Overview
This Topic covers sub-topics such as Global Warming, Carbon Cycle, Phosphorus Cycle, El Nino Effect, Algal Bloom, Red Tides and, Balancing Photosynthesis and Respiration
Important Questions on Biogeochemical Cycles

A climate pattern that describes the unusual warming of surface waters in the eastern tropical Pacific Ocean is called El Nino.

Respiration is a process that remove carbon dioxide from atmosphere.

What processes keep the concentration of atmospheric carbon dioxide in balance?

What is an algal bloom and what causes it?

Does carbon dioxide make water slightly acidic or basic when it dissolves?

Select the correct statement(s) with respect to the given graph.

Which of the following does not decrease the population size?

Which of the following is/are correct regarding carbon dioxide?

What could happen as a result of global warming?

Which one of the following is/are correct about the greenhouse effect?

The two main process in the carbon cycle are

Describe the pathways followed by phosphorous in an ecosystem.



Animals need large quantities of ________to make bones, teeth and shells.

_______ is the major constituent of DNA and RNA.

A biogeochemical cycle without an atmospheric component is

About 70% of the total global carbon is found in

What is the carbon cycle? Draw a neat, well-labelled diagram to show it.
