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Gr 9 Biology Science

Orchard Park Biology Test

TermDefinition
Pest A pest is an organism that humans xonsider harmful or inconvenient. Example; weeds, insects, fungi, rodents
Pesticide Pesticides are chemicals that are designed to kill pests.
Water Soluble Will dissolve and wash away and also can be harmful and affect nevous system of organisms.
Fat Soluble Will dissolve in fatty tissue, but stay in the body and will be passed on the food chain. Example; DDT
Bioaccumulation An increase in the concentration levels of a pesticide within the body of an organism over time
Bioamplification/Biomagnification A species at a higher trophic level feeds on more than one organism below it therefore pesticides concentrations tend to increase rapidly the higher up the food chain you look
Food Chain Shows the feeding relationships among species in an ecosystem. Carnivores linked in a food chain have a predator-prey relation ship with the animals they eat - in our case study example the hawk is the predator and the mouse is the prey.
Food Chain 1st Trophic Level Is a producer for example; grass, plant, trees, etc.
Food Chain 2nd Tropic Level Is the Primary consumer (herbivore) for example; rabbits, grasshoppers, deer, etc.
Food Chain 3rd Tropic Level Is the Secondary consumer (carnivore) for example; snakes, perch, shrew, etc.
Food Chain 4th Tropic Level Is the Tertiary consumer (carnivore) for example; hawks, owls, foxes, etc.
Food Webs A series of interconnecting food chains.
Sustainability The ability to maintain an ecological balance.
Sustainable Ecosystem An ecosystem that is maintained through natural processes.
Population A group of member of the same species that live in the same area.
Limiting Factor Any factor that restricts the size of a population or where it can live(can be biotic or abiotic)
Abiotic Limiting Factors Determines where a species can live.
Biotic Limiting Factors Determines a species success in an area.
Biotic Limiting Factors Include Includes how the species in a community in a community interacts with one an other such as competition(two species vie for the same resource),predation(one species feeds on another species),symbiosis(two species live in/on/near each other).
Abiotic Limiting Factors Include Includes the amount of light, water, nutrients and space, the temperature, and natural disturbances(logging, mining...).
Tolerance Range The abiotic conditions within which a species can survive(varies from species to species). A species with a wide tolerance range tend to be more widely distributed. For example; Raccoons.
Canada's Biomes Grassland, Temperate Deciduous Forest, Boreal Forest, Mountain Forest, and Tundra
Water Cycle The series of processes that moves water through the environment. For example; water evaporates from the ocean condenses to form clouds, rain back onto the land, and runs back into the oceans.
Carbon Cycle The series of processes that move carbon compounds throughout the biosphere. For example; carbon dioxide is turned into sugar in photosynthesis by plants and eaten by animals and turned back into carbon dioxide in cell respiration.
Invasive Species Non-native species that causes harm to the ecosystem in which it has been introduced. Often has no predators in new areas so they reproduce faster then native species.
Created by: eforster0592