Ecology Questions-Science Olympiad Questions and Answers Rated A+

Ecology Questions-Science Olympiad Questions and Answers Rated A+ What does P.O.P. stand for? Persistent organic pollutants. What are P.O.P.'s? Toxic substances formed from organic compounds. Besides mercury, what other heavy metals cause toxic pollution? Lead, Cadmium, and Chronium What are the main sources of mercury pollution? Gold mining and use of substances derived from mercury in industry and agriculture. What environmental damage is caused by mercury pollution? Mercury contaminates living organisms and biomagnificates. Humans are affected by this when they eat contaminated organism. What is a biodigester? A piece of equipment that produces carbon dioxide, hydrogen sulfide, and fuel gases. What are the main types of waste? Organic waste, recyclable waste, non-recyclable waste, toxic waste, nuclear toxic waste, and space waste. What are some agencies of pollution? Sewage, industrial waste, smoke, automobile exhaust, herbicides, insecticides, noise, radioactive substances. What are the sequential stages of a xerosere on a rock? 1. Crutose lichen stage 2. Foliose lichen stage 3. Moss stage 4. Herb stage 5. Shrub stage 6. Forest stage/climax. What are the sequential stages of a hydrosere on a hydrarch? 1. Phytoplankton stage 2. Rooted-submerged stage 3. Rooted-floating stage 4. Reed-swamp stage 5. Sedge-meadow stage 6. Woodland stage 7. Forest stage/climax. Name three ephemeral annual xerophytes. Argemone mexicana, solanum xanthocarpum, and cassia tora. Name three succulent xerophytes. Optunia, aloe, agave, euphorbia splendens, cereus, and mammillaria Name three root-submerged hydrophytes. Hydrilla, isoetes, potamogeton, and vallisnerica. Name three free-floating hydrophytes. Azolla, eichhornia, lemna, pistia, salvinia, spirodelia, and wolfia. What are the types of soil erosion? Water erosion, wind erosion, slip erosion, and over felling/overgrazing. What is a soil profile? An imaginary longitudinal section of the soil, showing it's different regions. What are edaphic factors? An ecological factor in which we study the structure and composition of soil, as well as it's chemical and physical