What are the possible consequences of adding an organism to a food chain?
New competition, possible overpopulation of some species, or altered predator-prey dynamics.
Variation of ecological habitats within a species is characteristic of which type of diversity?
When might an increase in biodiversity lead to a decrease in the stability of an ecosystem?
Invasion by non-native species that increase species count but reduce overall stability.
What happens when an organism is removed from a food chain?
Populations of dependent species decline or increase and the chain may collapse.
The variety of organisms within an ecosystem is characteristic of which type of diversity?
What happens to the other organisms in a food chain when an organism in the middle of the food chain is lost?
Species above the lost organism decline due to less food; species below may increase unchecked.
Explain how microevolution and migration can affect an ecosystem.
Microevolution adapts populations to local conditions; migration introduces/removes alleles and can change community composition.
How does a decrease in biodiversity impact an ecosystem?
Ecosystem becomes less stable, more vulnerable to disturbances and disease.
What are the possible consequences of adding an organism to a food chain?
The new organism may compete for resources, prey on existing organisms, or become food for them. These interactions can change population sizes and disrupt the food chain, though the effect depends on the organism and its role.
What happens to the other organisms in a food chain when an organism in the middle of the food chain is lost?
The organisms it ate may increase, while the organisms that ate it may decrease because they have lost a food source. These changes can disrupt populations throughout the food chain.
What happens when an organism is removed from a food chain?
Removing an organism can disrupt population balance: organisms it preyed on may increase, while organisms that depended on it for food may decrease.
When might an increase in biodiversity lead to a decrease in the stability of an ecosystem?
An increase in biodiversity can decrease stability when a newly introduced or rapidly growing species disrupts food-web relationships, for example by outcompeting native species or changing predator and prey populations.
The variety of organisms within an ecosystem is characteristic of which type of diversity?
Variation of ecological habitats within a species is characteristic of which type of diversity?
How does a decrease in biodiversity impact an ecosystem?
A decrease in biodiversity can disrupt food webs and ecosystem processes, reduce ecosystem stability, and make the ecosystem less able to recover from disturbances or environmental change.
Explain how microevolution and migration can affect an ecosystem.
Microevolution can change the traits of a population, affecting how it uses resources and interacts with other organisms. Migration can add or remove organisms and genes, changing population sizes, species composition, and competition in an ecosystem.
Did you find these answers helpful?