Biomes and Productivity
This biome contains plants that are adapted to prevent water loss due to the low average rainfall and high temperatures year-round.
What is the desert?
Name two carbon sinks that can hold carbon for overr 100 years!
Carbon sinks include forests and oceans. (Atmosphere)
What is the absorption of a substance by an organism at a rate greater than the rate of elimination?
What is biobioaccumulation?
What of the following is a direct economic advantage associated with aquaculture?
Aquaculture produces large amounts of seafood for human purchase and consumption year-round.
What percent of the world is covered in ocean?
71%
The largest area of old-growth forest in the United States is located in this state.
What is Alaska?
Which of the following best describes gross primary productivity in an ecosystem?
Gross primary productivity is the total amount of solar energy captured by producers through photosynthesis over time.
Some toxic compounds are ingested and retained in the tissues. These pollutants pose special risks to humans and other organisms high on the food chain because of which process?
Biomagnification
Wy is a population with high genetic biodiversity is better able to respond to environmental stressors.
Within the population there will be individuals that can withstand heat better than others.
Malaria kills how many people annually?
600,000
This terrestrial biome has the highest net primary productivity, in part because of consistently warm temperatures and abundant sunlight.
Tropical rainforest
How does the burning of fossil fuels contribute to the net increase in atmospheric carbon?
Carbon that has been sequestered underground is added to the carbon cycling between the atmosphere and the biosphere.
Which of the following is an unintended environmental consequence of aquaculture?
Contamination of surrounding water by organic waste.
Why are ecosystems with more species diversity more likely to recover after a disturbance than ecosystems with low species diversity?
More species available in an ecosystem will be able to recreate food webs after the disturbance. Also the more species in an area the higher the liklyhood that some of those organisms can travel during the disturbance and return after.
World population?
8.1 billion people?
The underlying subsoil of this biome is permafrost, which prevents both water draining through and deep-rooted plants from growing. Additionally, there is very little precipitation per year.
What is the Tundra?
Based on the laws of thermodynamics, estimate the biomass of the mice in the pyramid if there are 18,705 kg of grasses in an ecosystem? (mice are a secondary consumer)
187 kg
Although the use of DDT was banned in the United States in 1972, a test of the body tissue of an average United States resident today would most likely reveal the presence of DDT because
other countries that export produce to the United States still use DDT
This is most likely to be the direct result of lack of genetic diversity in a food crop such as corn?
Increased susceptibility of plant disease.
What is the elevation of Salisbury?
17-45 feet above sea level. If all the icecaps and glaciers melted oceans would rive around 170 ft
The net annual primary productivity of a particular wetland ecosystem is found to be 8,000 kcal/m2 per year. If respiration by the aquatic producers is 12,000 kcal/m2 per year, what is the gross annual primary productivity for this ecosystem, in kcal/m2 per year?
20,000 kcal/m2 per year
A field is abandoned, and an invasive plant that can live in nutrient-poor soil moves into the field. If the land is later cleared of this invasive species and it is discovered that the soil has an abundance of nitrogen compounds, what conclusion can best be made?
Bacteria in soil and in root nodules converted free nitrogen into nitrogen compounds.
Which of the following best explains why DDT has been found in penguin eggs in the Antarctic?
Chemicals used in one region of Earth can circulate in the biosphere and affect organisms in a distant region.
In England approximately 250 years ago, the peppered moth had light-colored wing patterns that camouflaged them against the light-colored trees. Over time in urban areas, the number of peppered moths with dark-colored wings increased as pollution from the Industrial Revolution darkened the trees the moths rested on.
How could you best describes how the moths adapted to the new environment over time?
The moths adapted to the new environment by changes in the genetics of the population.
What is the population of USA?
340 Million