Variation

A process where microorganisms convert sugars into other substances, such as alcohol, carbon dioxide, or acids.

Example: yeast producing alcohol in brewing.

An organism’s ability to survive in its environment and reproduce successfully, passing its genes to the next generation.

The use of scientific methods, such as DNA profiling, to solve crimes or identify individuals.

The preserved remains or traces of organisms that lived in the past, usually found in rock.

Examples: bones, shells, footprints.

The collection of fossils found in rock layers, which provides evidence of how organisms have changed over millions of years.