10/05/2020 Human Influences on Ecosystems(Senior Class Biology Study by Topics) 0Comments by Gate Academy Please fill in the information below. NAME EMAIL PHONE NUMBER 1. Which is an abiotic factor that would affect the ability of a species of tree to survive in a particular habitat? Type and number of herbivores presentType and number of tree parasitesAvailability of minerals in the soilClimax vegetation of the area2. Which of the following can cause pollution?I: Litter and rubbishII: Harmful chemicalsIII: Human wasteIV: Biodegradable materials III and IV onlyI, II and III onlyI, II, III, and IVI, III and IV only3. Which of the following activities does not have a negative impact on the environment?Increasing the use of chlorofluorocarbonsPlanting trees in a nature reserveUsing weedkillers for farmingBurning of fossil fuels4. Coal is a nonrenewable natural resource. Why is coal considered nonrenewable?No new coal is being produced on Earth.Coal is used to produce energy and not materials.Coal will never run out.Coal is being used faster than it is being produced.5. Which of these food chains is in the correct order? Snake, frog, caterpillar, water lilyCaterpillar, water lily, frog, snakeWater lily, frog, caterpillar, snakeWater lily, caterpillar, frog, snake6. What may result when the environment becomes unfavourable to the organisms?I: The organisms may die.II: The organisms may adapt.III: The organisms may move to another place.I and IIII and IIII and IIII, II and III7. What does the above picture show?ParasitismFood chainMutationFood web8. Which relationship is illustrated by a tapeworm living in the intestine of a human?MutualismsCommensalismPredator--preyParasitism9. What type of organism eats plants and animals? none of the aboveomnivorecarnivoreherbivore10. We can reduce land pollution by _________________________________________.I: incinerating rubbishII: reducing deforestationIII: using organic pesticides in farmingIV: building taller chimneys for factoriesII and III onlyI, III and IV onlyI and III onlyI only11. Many years ago, a volcanic eruption killed many plants and animals on an island. Today the island looks much as it did before the eruption. Which statement is the best possibly explanation for this? Destroyed ecosystems always return to their original stateGeographic barriers prevent the migration of animals to island habitatsDestroyed environments can recover as a result of the process of ecological successionAltered ecosystems regain stability through the evolution of new plant species12. Which of the following are non-biodegradable materials?I: WoodII: PlasticsIII:Styrofoam boxIV: Prawn shellII, III, and IV onlyI, II, III, and IVII and III onlyI and II only13. The burning of fossil fuels can lead to acid precipitation. What do fossil fuels generate that is needed to form acid precipitation?WaterGas pollutantsParticulate pollutantsEnergy14. What impact do the amounts of available energy, water, and oxygen have on an ecosystem?They are used as nutrientsThey act as limiting factorsThey recycle the residue of dead organismsThey control the environmental temperature15. Tectonic plates may move because of convection currents that occur in the mantle. What is convection?The transfer of energy through materials in direct contact.The transfer of energy due to the movement of matter.The process that breaks down rocks.The transfer of energy as earthquake waves.16. An example of a producer is:CaterpillarWater LilyFungusBird17. Bart believes that mice exposed to radio waves will become stronger. To experiment he places 10 mice near a radio for 5 hours. Bart also tested a control group of 10 mice that were not exposed to radio waves. His test consisted of a heavy block of wood that blocked the mice food. He found that 8 out of 10 of the radio waved mice were able to push the block away and only 2 out of 10 of the non-exposed mice were able to do the same. What is the independent variable in Bart's experiment?The strength of the mice.Whether the mice live or die.The amount of mice exposure to radio wavesThe weight of the mice.18. Water pollution can affect the ability of organisms to survive. Which of these statements is true regarding the chemical pollution of water?Only a few chemicals dissolve in water.Chemical pollution is not regulatedChemical pollutants can come from both point-sources and nonpoint-sources.Chemical pollutants are harmful only if present in very high concentrations.19. Which of these terms best describes the role of water in this power system? A created resourceAn energy resourceA nonrenewable resourceA material resource20. Which of the following would be considered a natural resource?SteelRockPlasticConcrete21. Insecticides and weedkillers will cause no harm to marine life. truefalse22. Which rocks can be changed into sediments by weathering and erosion?MetamorphicIgneousSedimentaryAll of these23. Kelly disposed off some clear liquid chemicals into a lake. Which of the following would be observed in the pond community?I: A smell could be detected from the lake.II: The water in the lake was stagnant.III: Dead fishes can be seen floating on the surface of the lake.IV: Leaves of plants growing by the lake turned brown.I and II onlyI, III, and IV onlyI, II, and IV onlyI, II, and III only24. ________ is a close relationship between two or more organisms of different speciesSymbiosisAll of the aboveMarriageParasitic25. How does maintaining water quality help ecosystems?It helps hydroelectric power plants make more electricity.It helps freshwater ecosystems obtain more salt water.It prevents them from becoming deserts.It prevents pollution from poisoning living things26 out of 25Time is Up!