Ecology Questions-Science Olympiad Exam Questions With Verified Answers

Ecology Questions-Science Olympiad Exam Questions With Verified Answers What does P.O.P. stand for? - answerPersistent organic pollutants. What are P.O.P.'s? - answerToxic substances formed from organic compounds. Besides mercury, what other heavy metals cause toxic pollution? - answerLead, Cadmium, and Chronium What are the main sources of mercury pollution? - answerGold mining and use of substances derived from mercury in industry and agriculture. What environmental damage is caused by mercury pollution? - answerMercury contaminates living organisms and biomagnificates. Humans are affected by this when they eat contaminated organism. What is a biodigester? - answerA piece of equipment that produces carbon dioxide, hydrogen sulfide, and fuel gases. What are the main types of waste? - answerOrganic waste, recyclable waste, non-recyclable waste, toxic waste, nuclear toxic waste, and space waste. What are some agencies of pollution? - answerSewage, industrial waste, smoke, automobile exhaust, herbicides, insecticides, noise, radioactive substances. What are the sequential stages of a xerosere on a rock? - answer1. 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? - answer1. 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. - answerArgemone mexicana, solanum xanthocarpum, and cassia tora. Name three succulent xerophytes. - answerOptunia, aloe, agave, euphorbia splendens, cereus, and mammillaria Name three root-submerged hydrophytes. - answerHydrilla, isoetes, potamogeton, and vallisnerica.