Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
natural selection |
favourable characteristics are passed down to offspring |
|
|
adaptive radiation |
one common ancestor and many different species ex: Galapagos finches, Lake Victoria cichlid fish |
|
|
ecological succession |
changes that happen over time in a type of organism in an area 2 types: primary and secondary |
|
|
primary succession |
occurs in area with no soil (like bare rock) wind and rain carry lichens to rocks weathering from lichens and wind, rain and freezing causes soil formation ex of causes: retreating glacier, cooling lava after volcanic eruption process may take hundreds of years |
|
|
pioneer species |
first organism to survive and reproduce in an area can change the environment by providing food or soil ex: lichens |
|
|
mature community |
change over time also called climax community |
|
|
secondary succession |
occurs soon after a disturbance in an area with undisturbed soil
ex: forest fire |
|
|
flooding |
can result in: soil erosion, soil pollution, widespread disease from drinking water contamination climate change may be affecting flood patterns |
|
|
tsunami |
huge fast ocean wave destroys plants, saltwater affects soil (meaning most plants die) |
|
|
drought |
low annual precipitation ecosystems will often recover climate change may be affecting drought patters |
