At any point in time, a number of environmental objectives must be met with a limited amount of economic resources. This means that once an environmental problem is identified, they have to be prioritized. In general, this is done using scientific valuation of the relative risk to human health and the ecology of a given environmental hazard - a procedure known as: A. Biodiversity B. Public Goods C. Risk Assessment D. Profit maximization

An ecologist studying the availability of nutrients and the distribution of the plants that live in this habitat is working at this level. An ecologist studying the size and distribution of the Karner blue butterfly is working at this level. An ecologist studying the mutualistic relationship between the Karner blue butterfly and ants is working at this level. An ecologist studying behavior of the caterpillars when they are at different larval stages is working at this level. < Previous a Choose ] [Choose ] Community Organismal Ecosystem Population ThouT [Choose ] [Choose] No new data to save. Last checked at 6:55pm S C

Disturbance often affects community structure by __________________. Question 24 options: A) accelerating competitive exclusion B) temporarily decreasing the resource base, then increasing the resource base C) increasing the degree to which a resource is limited D) temporarily increasing the resource base, then decreasing the resource base

What are the two main approaches to tackle the problem of global warming and climate change? compare the two approaches along the following dimension   Relative size of benefits versus costs.

NOTE: The image you need to see in order to answer this question is attachedA developer owns the property encompassing the three habitats above.  By law, one of the habitats must be left intact to satisfy the zoning laws. The developer works with an environmental engineer to choose which of the habitats should be saved.  The environmental engineer suggests that Site C should be saved.  Which of the following choices best justifies this decision?Responses  A)   Site C has greater species richness and species evenness than either Site A or Site B.  This will promote the maximum sustainability for future generations of animals.     B)   Site C is tied with Site A for greatest species richness, but unlike Site A, it has representative species from all 3 of the sites within it.     C)  Site C not only contains the greatest number of species, it also has the greatest genetic diversity within each species.     D)   Site C has more unique species in it than either Site A or Site B

Humans' effect on the environment, which includes a combination of what they consume and the waste they produce, is their A. ecological footprint.  B. ecological fingerprint. C. sustainability. D. environmental history.

What is the difference between a community and an ecosystem? Group of answer choices a. an ecosystem includes the abiotic environment b. a community includes the abiotic environment c. they are exactly the same thing d. an ecosystem covers a larger geographic area e. a community covers a larger geographic area

A biologist determines the growth rate of a population of 198 frogs in a marsh near Beaverhill Lake, Alberta, to evaluate the quality of the environment. The researcher finds that, in one year, 34 were born, 86 died, 12 migrated into the marsh, and there was no emigration. a. frogs are considered an indicator species for the quality of the environment. Determine whether the growth rate of this population in one year is a cause for concern. if so, what might the concerns be?

1.) At approximately what year did the human population enter an exponential growth phase? 2.) Prior to that time, what was the approximate carrying capacity of Earth? 3.) State three significant technological developments that have acted to increase the carrying capacity of Earth’s environment since that time. 4.) Provide two examples of density-dependent factors that are contributing to or have the potential to contribute to environmental resistance in human populations.

Identify three current environmental health problems likely to be exacerbated by climate change. How might existing public health practices be altered to anticipate these effects of climate change? What other key sectors (beyond health) should be engaged?