Some species of spider use the wind to carry them to new environments. If a spider's environment becomes overpopulated with
other spiders, the spider will spin a long, thin strand of web and attach itself to it When a strong wind comes along, it will catch the
strand and carry the spider to a new location, sometimes many miles away
Four egg-carrying spiders leave a pine forest on the wind and land in four different locations. At which location is a new species
spider most likely to evolve from the traveling spider?
A.
a tropical island 240 miles away
B.
a deciduous forest 2 miles away
C.
another pine forest 12 miles away
D.
a small town 4 miles away

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease