The gulf of mexico dead zone that forms each summer at the mouth of the mississippi river is caused largely by the input of agricultural fertilizers. many scientists advocate restoring wetlands (as well as creating them) as a strategy to reduce the severity and extent of the dead zone. the idea is that plants in healthy intact wetlands will remove these nutrients from the water (during growth) and prevent their washing into the river and the gulf of mexico. list at least two potential benefits to this strategy, as opposed to a more traditional chemical intensive approach such as that used at most waste water treatment plants.

Charles darwin published his theory of evolution in 1859. in what way foes modern evolutionary theory differ from the theory as proposed by darwin? a) darwin inferred that individuals can evolve, but modern generic science has shown that this is not true. b)darwin inferred that individuals do not evolve, but modern genetic science has shown that this is not true. c)modern science has disproved most of darwin's original theory of evolution, because darwin knew nothing about generations and their role in heredity. d)generic studies have shown that gene expression and other factors operate along with natural selection, but most of darwin's theory has been supported by modern science.

Liquid water turns into water vapor at which step in the water cycle

Directions: read the descriptions of the four islands presented in the lesson. 1. list two new traits that each new species of rat might demonstrate as it adapts to the conditions on each island. 2. introduce one of the four new rat species to another island and describe one challenge it would encounter and one success as it adapts to its new environment.