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. A large area of forest was destroyed by fire. Which of the following will happen?More plants will be grown.The land will have more fresh air.Less soil will be eroded.Wildlife will be endangered2. Scientists use absolute dating to determineThe approximate date of a rock layer or fossilThe physical appearance of fossilsThe numerical age of an object in yearsThe chemical composition of rocks3. How does maintaining water quality help ecosystems?It prevents them from becoming deserts.It helps freshwater ecosystems obtain more salt water.It prevents pollution from poisoning living thingsIt helps hydroelectric power plants make more electricity.4. Coal is a nonrenewable natural resource. Why is coal considered nonrenewable?Coal will never run out.Coal is used to produce energy and not materials.Coal is being used faster than it is being produced.No new coal is being produced on Earth.5. We can reduce land pollution by _________________________________________.I: incinerating rubbishII: reducing deforestationIII: using organic pesticides in farmingIV: building taller chimneys for factoriesI onlyII and III onlyI and III onlyI, III and IV only6. Insecticides and weedkillers will cause no harm to marine life. falsetrue7. Which of the following are non-biodegradable materials?I: WoodII: PlasticsIII:Styrofoam boxIV: Prawn shellII and III onlyI, II, III, and IVII, III, and IV onlyI and II only8. Several factors can lead to soil erosion. Which of these human activities is most likely to contribute to soil erosion? Planting trees and vegetationReducing the amount of livestock in an areaClearing land for farmingDesignating land as a wildlife habitat9. A fungus is an example of: An autotrophAn herbivoreAn omnivoreA saprophyte10. What are the three types of symbiotic relationships between organisms? All of the above is trueMutualism, competition, predationSymbiosis, commercialism, paralysisMutualism, commensalism, parasitism11. 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 amount of mice exposure to radio wavesWhether the mice live or die.The weight of the mice.The strength of the mice.12. Earth's surface is mostly water. However, only a small amount of water on Earth is clean freshwater. Why is it important to maintain water quality?To keep the ocean levels from loweringTo keep water from evaporatingTo keep the polar ice caps from meltingTo keep water from becoming a nonrenewable resource13. For a producer to maintain itself, which factor must be present in its environment? SunlightCarnivoresParasitesHerbivores14. Millions of automobiles are on roads around the world every day. The image below shows one effect of car travel. What does the image best illustrate?Air pollutionGlobal warmingUrbanizationAcid precipitation15. One job that many governments have is stewardship of Earth's resources. Stewardship is the careful and responsible management of a resource. Why is stewardship of Earth's resources important?It prevents people from using resources.It keeps governments stable.It ensures that resources will not be polluted or used up too quickly.It gives people the opportunity to vote.16. Which is an abiotic factor that would affect the ability of a species of tree to survive in a particular habitat? Climax vegetation of the areaType and number of tree parasitesAvailability of minerals in the soilType and number of herbivores present17. One biotic factors that limits the carrying capacity of any habitat isActivity of decomposersLevel of atmospheric oxygenThe availability of waterAmount of soil erosion18. Which of the following activities does not have a negative impact on the environment?Increasing the use of chlorofluorocarbonsBurning of fossil fuelsPlanting trees in a nature reserveUsing weedkillers for farming19. Adaptation is one of the parts of natural selection. What is an adaptation?A process by which inherited traits in a population change over generationsA process by which individuals that are better adapted are more likely to camoflage themselves to their environmentA group of organisms that can mate to produce fertile offspringAn inherited trait that improves chances of survival and reproduction for a group of individuals in a population20. What does the above picture show?Food chainParasitismFood webMutation21. Everyone uses natural resources. How do natural resources benefit humans?Natural resources improve lives.Natural resources are low cost.Natural resources are readily available.Natural resources are in unlimited supply.22. Which of the following can cause pollution?I: Litter and rubbishII: Harmful chemicalsIII: Human wasteIV: Biodegradable materials I, III and IV onlyIII and IV onlyI, II, III, and IVI, II and III only23. Which of these terms best describes the role of water in this power system? A created resourceA material resourceAn energy resourceA nonrenewable resource24. The removal of nearly all the predators from an ecosystem would most likely result inAn increase in the number of herbivoresAn increase in the number of carnivore speciesA decrease in the size of decomposersA decrease in new predators migrating into the ecosystem25. What type of organism eats plants and animals? herbivorecarnivorenone of the aboveomnivore26 out of 25Time is Up!