Given a scientific question, generate a correct answer to it.

What consists of four major components: inorganic mineral matter, organic matter, water and air, and living matter?
soil

Giardiasis and malaria are diseases caused by what organism?
protozoa

While normal light microscopes can magnify objects up to about 1,500 times, what advanced instruments can magnify objects up to 1,000,000 times?
electron microscopes