Chapter Three Biology

2. the top level of the region below the ground that is saturated with water.
3. found in the ozone; molecules of carbon dioxide, water, and glucose.
6. Slowly decomposing plant matter produced in low-oxygen environments such as bog.
8. Organic compounds undergo changes within living things and within ecosystems.
12. The process in which nitrates are converted to
13. water that steeps into the soil (percolation)
14. lakes, swamps, sloughs river, streams- flow to the ocean ground water- sinks into the soil.
15. precipitation that collects above the ground in lakes, ponds, and rivers.

1. is the extent to which a surface can reflect light that strikes it.
4. The loss of water through plant leaves.
5. atmospheric gases that surround the Earth trap the heat from the sun and warm the Earth's surface.
6. rain, snow, sleet, hail.
7. Carbon that is found in the atmosphere, ocean, and Earth's crust.
8. Water Vapour cools in the atmosphere and remains as clouds or falls.
9. the cycle of matter in which carbon atoms move from an inorganic form (usually carbon oxides) to an organic form and then back again.
10. Carbon that is found in the bodies of living things and in peat.
11. as water seeps downward it carries dissolved organic matter and minerals to the lower layers of the soil.
13. the burning of wood and fossil fuels have caused carbon dioxide levels to triple over the past 40 years.