Ecology Perguntas
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How does population density differ from population size?a.Population size takes all organisms into account, while population density only takes specific age groups of the population into account.b.Population size is the total number of organisms, while population density is the total number of organisms within a given area.c.Population size is the total number of organisms within a given area, while population density is the total number of organisms of a specific age.d.Population size is the total number of organisms of all species, while population density is the total number of organisms of a specific species.
R-selected species have a short life span and an early reproduction cycle.
Migration is _______.a.the movement of organisms from a native location to a foreign locationb.the movement of organisms from a foreign location to a native locationc.the movement of organisms from their water supply to their food supplyd.the seasonal movement of organisms between locations
How many species are estimated to be living on Earth?
Which of the following statements about tolerance range is true?a.Tolerance range is different for different organisms.b.The tolerance range is the total number of organisms that can be supported by an ecosystem.c.Tolerance range is affected by biotic factors in an ecosystem.d.The available water supply does not impact an organism's tolerance range.
A high birth to death ratio leads to smaller populations.
Lions live in groups called prides. Lion populations would most likely fall in which category of population distribution?a.evenb.randomc.clumpedd.density
A population's distribution can be even, clumped, or random.
In a particular environment there is plenty of food, water, cover, and space to support a large population of pheasants, but a larger quantity of predators are introduced. The predators become the _______ for pheasants in that environment.a.carrying capacityb.abiotic factorc.limiting factord.biotic factor
When two species compete for the same ecological niche, they cannot coexist because they are competing for the exact same resources. One species is always slightly better adapted for the niche than the other, so over time the disadvantaged species will either go extinct or shift to a different ecological niche. This situation highlights the concept of _______.a.carrying capacityb.competitive exclusionc.limiting factord.biotic factor
what are the two main fundamental divisions in the aquatic ecosystem?
how much of earth's surface does freshwater cover?
what are the two major factors which determine a biomes distribution?
what are the three main ecological categories of organisms?
_ refers to the dispersion of acid-containing gases, aerosols, and rain into soils, plants, building, and bodies of water
True or false: Photochemical smog is composed primarily of pollutants released in coal-burning
The _ is the number of babies born each year expressed as a percent of the population
True or false: Smog is a complex mixture of both primary and secondary pollutants
True or false: The deletion of stratosphere ozone is directly related to climate change in the troposphere
_ at birth is the average age to which a baby born at a given time will live