The European starling entered North America in the late 1800s. It proved very successful and was able to spread throughout the United States by 1955.The survival and rapid reproduction of starlings MOST likely limited the population size of which organisms within its habitats?
What is competitors ?
100
What is the carrying capacity of an ecosystem?
What is the maximum number of individuals that an ecosystem can support without harming the ecosystem.
100
The carrying capacity of a region is affected by both density-dependent factors and density independent factors. What is a density-independent factor?
What is Temperature ?
100
What is one interaction that would not be illegal under the Endangered Species Act?
What is having a permit to capture and conduct research with endangered species
100
Scientists have shown that clearing the forest in the Amazon for farming is causing the extinction of native species. Which is the MOST direct cause of extinction from clear-cutting of land?
What is habitat loss
200
What human activity has contributed to the formation of the hole in the ozone layer?
What is use of chlorofluorocarbons ?
200
What action is an example of a change that will MOST likely decrease the population of many species?
What is the filling in of wetland areas for development of vacation homes
200
The Arctic tundra is covered by a thick frozen layer called permafrost. The surface of the ground thaws during summer in which a few microorganisms and some plants with shallow roots are able to survive. What factor MOST limits the diversity of life in the Arctic tundra during the summer?
What is the amount of fertile soil?
200
A prey population typically increases when its primary predator is removed from the ecosystem. What MOST likely happens after this increase in the prey population?
What is food shortages and disease reduce the prey population.
200
Habitat becomes a major factor in the extinction of a species when?
What is competitive species are introduced?
300
As human population increase, more shelter is needed. Increasing shelter often requires making a trade-off with another resource. In which case is a food resource decreased to increase a shelter resource?
What is Farmland converted into house lots ?
300
50 million acres of tropical rainforest are cleared each year. Which effect MOST likely would result from the clearing of these forests?
What is a decrease in biodiversity
300
A population of baboons has access to plenty of food, shelter, and space to live but has an inadequate supply of water. What BEST defines the water in this case?
What is limiting factor ?
300
A certain snake species in an ecosystem eats small rodents. If a bird species is introduced into the ecosystem that also eats small rodents, what will MOST likely increase?
What is competition ?
300
When the birth rate of a population is equal to the death rate, the population is said to be ___________.
What is stable?
400
The major human causes of extinction today are___________
What is Hunting and destroying habitats and Polluting and introducing non-native species.
400
What typically happens when a population exceeds its carrying capacity?
What is some members of the population will die off due to lack of resources
400
What event MOST changes an ecosystem in a single day?
What is Wildfire?
400
Fleas, ticks, and tapeworms are all examples of which of the following?
What is Parasitism
400
Factors such as carrying capacity and symbolic relationships within a community impact the _______________ of that community.
What is biodiversity?
500
Professionals who study and make predictions about human populations are called ____________.
What is Demographers?
500
DAILY DOUBLE!
What is an advantage that exotic species have when introduced to a new habitat?
What is exotic species have no natural predators
500
In the process of cellular respiration humans produce carbon dioxide. Plants use the carbon dioxide in photosynthesis and produce oxygen for humans. What type of symbiotic relation is this?
What is Mutualism?
500
What is an advantage that exotic species have when introduced to a new habitat?
What is the exotic species have no natural predators