Which of the following best explains why decomposers in soils and water are important to ecosystems?
They recycle nutrients
What are the two driving forces of this Ocean Circulation?
Salinity and water temperature
Most of the Earth's deserts are at approximately 30° latitude, north and south, because these latitudes arecharacterized by
descending dry air currents
El Niño, a periodic warming of ocean surface waters, occurs in which of the following regions?
Tropical East Pacific
Which of the following is a characteristic of tropical rain forests?
Their soils are relatively poor in nutrients
Which of the following is true, of carbon, as it cycles in nature?
Carbon sinks include forests and oceans
The "ability to do work " is called
energy
A dishwasher uses 400 watts each time it is run. A full cycle will run for 1 hour. The dishwasher is used 150 times per year. How many Kwh of energy does it use in one year?
60 kwh
Which of the following is products made, by humans, out of phosphous?
soap, fertilizer, detergents
The second law of thermodynamics states that
all systems move toward increased entropy
Which region has the lowest atmospheric pressure?
Exosphere
What is the process called when plants take up nitrates and nutrients from their roots?
assimilation
14 Which of the following is a biome found at the ITCZ seen in the diagram?
tropical rain forest
Which of the following is a biome found at 30 degrees North seen in the diagram?
desert
The IUCN has critical indicator of the health of the world's biodiversity and the status of different species. What is the name of this indicator?
Red List
Which of the following is matched up with the greatest storage reservoir?
The nitrogen cycle and the atmosphere
The science community believes that there are 6 mass extinctions. What is the cause of the sixth?
humans
Of the following organisms, which occupies the lowest trophic level?
Deer
According to the law of conservation of matter, I. matter can be createdII. matter cannot be destroyedIII. after a chemical reaction, the original atoms remain
II and III
Which of the organisms, below, is the best example of a detrivore?
earthworms
When trying to control Eutrophication, what is used to limit the amount of Nitrogen loading?
storm water ponds
In general, which of the following is the best long-term method of preventing extinctions?
Protecting the habitats of endangered species.
Which latitude shown on the diagram above experiences 24 hours of day-time on December 21?
Antarctic circle
Which letter above represents the water that is released by plants?
Transpiration
A large forested area is fragmented into small forest tracts separated by agricultural areas. This change will most likely lead to ?
a decrease in the gene flow within species of the original forest.
What kind of Air pressure system is located at the Intertropical Convergence Zone (ITCZ) ?
tropical rainforest
In England approximately 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 mothswith dark-colored wings increased as pollution from the Industrial Revolution darkened the trees the moths rested on.Which of the following statements best describes how the moths adapted to the new environment over time?
the moths adapted to a new environment by changes in the genetics of the population
Which letter above represents the process when excess Nitrogen gets into ponds, streams or lakes and causes algae blooms?
Eutrophication
Which of the following world regions contain the greatest area of rain forest?
Brazil and Indonesia
A substance with a pH of 4 has ______ times the hydrogen ion concentration of a substance with a pH of 6.
100
Which of the following changes in eastern Pacific Ocean food webs is typically associated with La Niñaevents?
Increased phytoplankton concentrations
Which of the following completes the photosynthesis equation belowSunlight + 6CO2 + 6H2O => ____________ + 6O2
C6H12O6
Based on the diagram, which of the following changes are most likely to occur in the central and easterntropical Pacific during El Niño?
The Peruvian current weakens, leading to warmer-than-average sea-surface temperatures.
Fragmentation of tropical forests due to human activities is leading to a significant loss of biodiversity in this area.
B South Africa
The Gross Primary productivity of a coastal wetland, in North Carolina, was measured to be 25 kg C/m2-year.The respiration rate, for the wetland, was calculated at 10 kg C/m2-year. What is the NPP (Net Primary Productivity) for the weland in terms of Carbon Biomass?
15 kg C/m2-year
The great grasslands of the world have which of the following primary characteristics in common?
Seasonal cycles of temperature and precipitation produce abundant vegetative growth
Characteristics that tend to increase the risk of a species becoming endangered include which of thefollowing?1. Having a very limited distribution2. Being a specialist at the end of a long food chain3. Having a small population size
1, 2, and 3
Which country has the largest boreal forest?
Russia
Which one below is considered a 1st level consumer?
Herbivore
Which of the following is the most important organism in the Nitrogen Cycle?
bacteria