two number:- unit D: matter and energy in the biosphere -eastglen-sciebce Flashcards
Science
What is Photosynthsis?
A proces that transforms carbon dioxide and water into oxygen and glucose.
What is Energy?
The ability to do words.
What is cellular Respiration?
Uses glucose and oxygen to produ carbon dioxide, water and energy within a cell.
What is Starch?
Excess glucose stored in plants.
What is Ecosystem?
A group of living things and the environnent they they live in.
What is Food Chain?
How energy matter transfers through an ecosystem by feeding.
What is Producer?
Organisms at th bottom of the food Chain, Produce own food.
What is Consumer?
Organisms that either eat produers or consumers.
What is Decmposer?
Eats the waste products of an ecosystem.
What is Food Web?
Better model of food chain, shows multiple levels of feeding.
What is Primary Consumer?
Eats plants only.
Whis is Secondary Consumer?
Eats animals that eat plants.
What is Tertiary Consumer?
Eats animals that eat other animals.
What is Energy Transfers?
Organisms in a food chain can be represented by an ecological pyramid.
What is Ecological Pyramid?
A model that shows the nuber of organisms and the amout of energy available at each level.
What is Water Cycle?
The re-use or cycling of water in nature.
What is Carbon Oxygen Cycle?
The re-use or cycling of oxygen and carbom in nature through photosdntesis and cellular respirtion.
What is Nitrogen Cycle?
The re-use or cycling of nitrogen in nature throungh food chains and decomposition.
What is Compost?
A mixture decomposing plants and soil.
What is Population?
The group of individuals of the same species living togeter in the same place at the same time.
What is Birth Rate?
The number of young produced by a population over a period of time.
What is Death Rate?
The number of individuals that die during a
specified time.
What is Immigration?
The number of organisms coming to an area.
What is Emigration?
The departure of organisms from a certain area.
Waht is Limiting Factors?
The factors that limit the number of organisms an environment can support
What is Abiotic Limiting Factors?
Non-living factors that limit the number of
organisms an environment can hold.
What is Predation?
The killing and eating of one animal by another.
What is Parasitism?
The relationship between host and parasite.
What is Competition?
The competition among organisms for resources such as food, shelter, light and
water.
What is Host?
Any organism that has a parasite.
What is Reproduction Rate?
The rate at which a pair of organisms can
reproduce.
What is Exotic Species?
Any species that does not naturally occur in an ecosystem.
What is Ecosystem:
The sum of a community of living things and the environment in which they live.
What is Biotic Community?
All the livingcomponents of an ecosystem.
What is Abiotic Community?
All the non-living components of an ecosystem.
What is Climae?
average weather conditions based on long term records.
What is Topography?
The physical features in an area.
What is Altitude?
The measure of height above sea-level.
What is Latitude?
The measure in degrees north or south of the equator.
What is Soil?
Thin layer of rock fragments and decomposed plant matter that covers the land.
What is Clay?
The smallest particles that make up soil; form a flexible mass when wet.
What is Silt?
Tiny rock particles found in soil; these particles are larger that clay but
smaller than sand.
What is Sand?
Grain-sized pieces of rock found in soil.
What is Gravel?
The largest particles found in soil; small stones.
What is Humus?
The part of soil consisting of broken down plantfibres, soil particles, and decayed
organisms.
What is Soil Crumbs?:
Particles of humus that have formed clumps.
What is Leaching?
The washing out of materials by water running through soil.
What is Biome?
A large geographic area containing distinct plants and animals.
What is Diversity?
See biodiversity.
What is Biodiversity?
A description of the variety of living things in an area.
What is Extinction?
The elimination of a species from earth.
What is Habitat?
An organism’s shelter and food.
What is Species at Risk?
Pants and animals close to becoming extinct.
