Science
Terms
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- host
- the organism that a parasite lives in or on in parasitism
- death rate
- the number of deaths in a population in a certain amount of time
- acid rain
- percipitation that is more acidic than normal
- gene
- a structure in an organism's cells that carries its hereditary information
- biomass fuel
- fuel made from living things
- ozone
- the toxic form of oxygen
- sediments
- paricales of rock and sand
- parasitism
- a relationship in which one organism lives on or inside another and harms it
- food chain
- a series of events in which one organism eats another
- dispersal
- the movement of organisms from one place to another
- combustion
- the burning of fuel
- sewage
- the water and human wastes that are washed down sinks or toilets
- pesticide
- a chemical that kills crop-destroying organisms
- fallow
- left unplanted with crops
- nucleus
- the central core of an atom that contains the protons and the neutrons
- tundra
- an extremely cold, dry biome
- bedrock
- rock that makes up the Earth
- toxic
- poisonous
- prey
- an organism that is killed in predation
- nodules
- bumps on the roots of certain plants that house nitrogen-fixing bacteria