Chapter 7 Ecology Humans and Global Change Miller and Levine Bio

Front

According to the data on the visual, the lower pH the water has will produce what effect?

Back

more acidic

Front

What can be inferred about the concentration of DDT as it is consumed by higher-order consumers on the food chain?

Back

The concentration of DDT is multiplied as it passes up the food chain from producers to consumers.

Front

What conclusion can be made now that unleaded gasoline is widely used?

Back

Lead emissions have dropped, leading to healthier soils, rivers, and streams.

Front

What is the relationship between habitat size and the number of species that can live there?

Back

The smaller the habitat fragment is, the smaller the number of species that can live there, and the smaller the populations the fragment can support.

Front

What is the overall trend in the mass of ice on Antartica?

Back

The mass of ice on Antartica is decreasing.

Front

Which sphere is affected by human and non-human activity?

Back

biosphere, geosphere, hydrosphere, and atmosphere.

Front

What areas of the earth's surface have seen an increase in average temperatures, according to the color scale titled 'temperature anomaly'?

Back

The highest increases in temperature are concentrated in the Arctic region.

Front

Which activity would you predict is most likely to have the smallest impact on ecosystem services?

Back

using land to create a national park.

Front

What conclusion is supported by the data in the graph? The graph below shows the levels of halogens in the atmosphere for several years after the legislation was passed.

Back

The concentration of halogens in the atmosphere decreased during this time period.

Front

Commercial development in the U.S. has resulted in an increase in the number of roads, housing developments, shopping centers, and parking lots. What risk does this pose to organisms in environments impacted by commercial development?

Back

Development often causes habitat fragmentation, which can threaten biodiversity.