chapter 6 and 5 Flashcards
what is pollution
harmful materials released, into the air
what is acid rain
rain that contains higher than normal levels of acid
what is bioaccumulation
when toxins build up in a food chain
what is the carbon cycle
The cycle which carbon is used and reused through the ecosystem.
what can Rachel Carson be proud of
she made countries banned pesticides, because she found out that pesticides caused death of thousandths of hawks and eagles
why does the amount of water, on earth stay more, or less the same
because the only thing that changes are the stages of the water cycle
what is succession
the process of new species replacing new species in the ecosystem
what is biological control
the process of controlling insect pests with their natural enemies
what is introduced species
species that are introduces into an environment where they are not naturally found
what is primary succession
primary succession Is the gradual growth of organisms in an area that is previously bare
what is secondary succession
the gradual growth of organisms in an area that previously had a number of organisms.
what does heat have to do with new forests
heat actually helps new forests because plants grow better in soil that has been burnt
what is the leafy spurge
the leafy spurge is a biological control of pests
what is the spurge beetle
is a introduced species
what percent of al living things are are now extinct
90 percent
