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Which human activity has the potential to greatly affect the equilibrium of an ecosystem?
respiration
parasite/host
A viral infection leads to a decrease in the number of white blood cells being produced in the body.
released as heat energy back into the hummingbird’s environment
loggers planting a tree for each one cut down
nutrient cycles
gene expression was influenced by the environment
emptying an aquarium containing many nonnative fish of several species into a local lake
Which statement describes a failure of homeostasis in humans?
respiration
parasite/host
A viral infection leads to a decrease in the number of white blood cells being produced in the body.
released as heat energy back into the hummingbird’s environment
loggers planting a tree for each one cut down
nutrient cycles
gene expression was influenced by the environment
emptying an aquarium containing many nonnative fish of several species into a local lake
Some environmental engineering companies have recently designed “manufactured wetlands” to serve as natural sewage treatment plants. Utilizing the ability of wetland organisms to reduce human wastes makes use of naturally occurring
respiration
parasite/host
A viral infection leads to a decrease in the number of white blood cells being produced in the body.
released as heat energy back into the hummingbird’s environment
loggers planting a tree for each one cut down
nutrient cycles
gene expression was influenced by the environment
emptying an aquarium containing many nonnative fish of several species into a local lake
Genetically identical yarrow plants were grown at different altitudes. Even though their genetic makeup was identical, the plants grew to different heights. One likely explanation for the different heights of the plants at each altitude is that
respiration
parasite/host
A viral infection leads to a decrease in the number of white blood cells being produced in the body.
released as heat energy back into the hummingbird’s environment
loggers planting a tree for each one cut down
nutrient cycles
gene expression was influenced by the environment
emptying an aquarium containing many nonnative fish of several species into a local lake
Sustainable development occurs when people use their resources without depleting them. Which human activity is the best example of sustainable development?
respiration
parasite/host
A viral infection leads to a decrease in the number of white blood cells being produced in the body.
released as heat energy back into the hummingbird’s environment
loggers planting a tree for each one cut down
nutrient cycles
gene expression was influenced by the environment
emptying an aquarium containing many nonnative fish of several species into a local lake
The relationship between ringworm and humans can be described as
respiration
parasite/host
A viral infection leads to a decrease in the number of white blood cells being produced in the body.
released as heat energy back into the hummingbird’s environment
loggers planting a tree for each one cut down
nutrient cycles
gene expression was influenced by the environment
emptying an aquarium containing many nonnative fish of several species into a local lake
Which biological process is represented in the diagram below?
respiration
parasite/host
A viral infection leads to a decrease in the number of white blood cells being produced in the body.
released as heat energy back into the hummingbird’s environment
loggers planting a tree for each one cut down
nutrient cycles
gene expression was influenced by the environment
emptying an aquarium containing many nonnative fish of several species into a local lake
A hummingbird may need to consume up to 50% of its body weight in sugar each day, just to meet its energy needs. Some of this energy is stored and some is used for metabolic activities, but much of the energy is
respiration
parasite/host
A viral infection leads to a decrease in the number of white blood cells being produced in the body.
released as heat energy back into the hummingbird’s environment
loggers planting a tree for each one cut down
nutrient cycles
gene expression was influenced by the environment
emptying an aquarium containing many nonnative fish of several species into a local lake
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