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Scientists have found that although plants require light to carry on photosynthesis, very high levels of sunlight can kill some plants. This illustrates that many biochemical processes may occur*
Wildflowers grow and reproduce during the spring snowmelt in the desert region of Death Valley, California. Which environmental factor would most likely have the greatest influence on these activities?*
The diagram below represents various factors in an area.
The diagram best represents*
Base your answers to questions 4 on the diagram below and on your knowledge of biology. The diagram represents a food web in an ecosystem.
Missing from the diagram of this ecosystem are the*
Base your answers to questions 5 on the graph below and on your knowledge of biology. The graph shows the growth of a population of rabbits in a specific ecosystem.
Which environmental factor could have caused the change indicated at A?*
Scientists have recently discovered a community of bacteria and clams living under an ice shelf in Antarctica. These organisms live under 600 feet of ice, in the absence of sunlight, and in temperatures considered too cold for most living organisms. The location where these organisms live is unusual because*
The chart below shows three ecological terms used to describe levels of organization on Earth.
Which diagram best represents the relationship of these ecological terms?*
The organisms in a pond and the physical factors influencing them best describe*
Forests, mountains, rivers, and marshes are examples of the wide variety of ecosystems in New York State. The diversity of these ecosys- tems is most likely the result of*
Which human activity most directly causes a significant increase in the amount of carbon dioxide in the atmosphere?*
In a sewage treatment facility, an optimal environment is maintained for the survival of naturally occurring species of microorganisms. These organisms can then break the sewage down into relatively harmless wastewater. For these microorganisms, the wastewater facility serves as*
Base your answers to questions 12 on the diagrams below and on your knowledge of biology. The diagrams represent how various populations interact in a forest environment.
If this forest community experienced a severe lack of rain throughout the spring and summer seasons, state what effect this drought could have on the grouse population. Support your answer. *
Base your answers to questions 13 on the chart below and on your knowledge of biology. The chart shows seasonal changes in an ecosystem and the overall carrying capacity of the ecosystem.
State why the populations decrease between July and December. *
Base your answers to questions 14 on the food web represented below and on your knowledge of biology. The food web contains some of the organisms found in Glacier National Park.
Explain why a major increase in the number of cloudy days that extends over a period of years would be expected to affect the populations of both plants and animals in this ecosystem. *
Recently, the bison population in Yellowstone National Park declined significantly. This was due in part to a particularly harsh winter. State one reason why a harsh winter would have this negative effect on the bison population. *