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600

The first organisms in a new environment break down barren rock into usable soil during primary succession.

What is a pioneer species?

600

How much energy is lost to heat from one trophic level to the next?

90%

600

The legs of crocodiles and cats have similar bone structures and develop in a similar way which indicates a common ancestor.  What type of structures are the leg bones?

What are homologous structures?

600

This process produces four genetically unique cells, each with half the number of chromosomes as in the parent

meiosis

600

A biomolecule that serves as a fast source of energy?

What are carbohydrates?