- Read each question and the list of possible answers. Circle the best answer. 1. What do "diversity"and "biodiversity" both describe? A. the elevation of a biome B. the size of the living organisms themselves C. the number of different species in an area D. the size of a biome 2. Choose the correct term for animals or plants that are in danger of becoming extinct. A. species at risk B. biodiversity C. species at large D. exotic species 3. Which of the following is included in synthetic fertilizers because it increases plant growth? A. carbon dioxide B. chlorofluorocarbons C. oxygen D. nitrogen 4. Scientists have developed two types of chemicals to help increase food production. What are . they? A. pesticides and synthetic fertilizer B. insecticides.and worms C. fertilizers and worms D. synthetic fertilizer and mosquito repellent 5. The concentrations of chemicals (such as DDT)are found to be greater in animals that are higher on the food chain. What is this called? A. chemical movement B. biological destruction C. biological magnification D. poisoning
- Science 14 Unit D: Ecology 5. Match each description in Column A with the term in Column B. __ the organisms in an ecosystem are called __ the non-living environment is called __ term for the long-term precipitation and temperature in a region __ temperature decreases the higher you go in __ __ name for the decaying plant and animal matter in soil __ term for rainwater removing nutrients from the soil __ name for a large area with similar climate and ecosystems __ term used to describe a species that no longer exists because all members are dead __ type of biome on the prairies of southern Name: __ Date: __ A. Climate B. Altitude C. Biome D. biotic community E. Extinction F. Humus G. Grassland H. Leaching I. abiotic environment 6. Indicate whether each statement is true or false. Correct each false statement by replacing the italicized term with another term. __ A. An item that is biodegradable takes a long time to break down in the environment. __ B: Many people try to control the population of insects by spraying them with herbicides. __ C. Insects can'become resistant to chemical pesticides. __ D. Applying fertilizer to a lawn or a field can lead to biological magnification in a pond or lake. __ E. Many scientists have linked the burning of fossil fuels to the environmental problem of global warming. __ F. The nitrogen cycle protects living things on Earth from harmful UV radiation. __ G. CFCs are chemicals that are destroying the ozone layer. __ H. Using a re -useable plate over again can reduce the amount of waste and protect the environment. __ I. One way to decrease the volume of waste entering landfills is to recycle paper, glass, and plastiC. J. Landfill sites are sealed to prevent toxic chemicals from accidentally entering the water cycle.
- 1) Label as either Densin -Dependent or Density Independent Factor a. __ -An enormous grassfire burns grass in the Medicine Hat area affecting hers of Pronghom antelope. b. __ - Both Pike and Walleye prey on Perch so they compete for the same food source. c. __ - A massive drought spreads across Southern Alberta affecting Wildlife population. d. __ - How waste water is being poured into a lake causing the overall temperature of the lake water to rise. The aquatic population of insects are adversely affected by this increase in temperature e. __ - Five mice live in a small cage.Fifteen new mice are added to the cage causing crowding. This results in fighting among the mice f. __ - Male Sage Grouse dance to attract females on a traditional dancing around called a lek .Thirty-five grouse have used this lek for many years.This year, however.10 new males join in the dance. g. __ - Insecticides used to control grasshoppers results in a decline in a Several burrowing owls eat grasshoppers. h. __ - The Thrips, a small insect considered a common plant pest feed on crops and house plants. A cooler summer has reduced the reproductive success of thrips in BC , resulting in less damage to crops. i. __ - Global warming is resulting in an overall increase in world
- 1 WHMIS Symbol Class D Division 2 is Poisonous and Infectious Materials (Other Toxic Effects)? True False
- NOVA-Secrets in our DNA 1. (2:10) What do consumer DNA test kits help reveal about ourselves? 2. (6:15) How is DNA inherited from our ancestors? What percentage of DNA do we acquire from each of our parents? 3. (7:05) What are centimorgans? How does it help us determine our relationship with other individuals? 4. (7:30) Why are centimorgans just an indicator of a POSSIBLE relationship between two individuals? 5. (12:45) What is the "DNA code" made of? 6. (12:50) How many base pairs make up our complete genome? 7.(13:22) What are single nucleotide polymorphisms (SNPs) , and why are they important when comparing DNA between two different individuals? (turn over)
