A bird population only eats a certain type of plant. One year, flooding washes away most of these plants in an area. What will most likely result? immigration followed by competition competition followed by immigration emigration followed by competition competition followed by emigration

A small number of birds arrive on an island from a neighbouring larger island. This small population begins to adapt to the new food plants available on the island, and their beaks begin to change. About twice a year, one or two more birds from the neighbouring island arrive. These new arrivals ________.Question 9Select one:a.speed up the process of speciationb.tend to promote adaptation to the new food plantsc.tend to slow adaptation to the new food plantsd.represent a colonising event responseClear my choice

A farmer is struggling to control the population of a certain insect on his farm.  After researching population control techniques, he discovers that a particular bird is a predator of this insect.  The farmer purchases a number of these birds and releases them onto his farm.How might the farmer's action most likely have a negative impact on the ecosystem?ResponsesThe birds will increase biodiversity of native plant species.The birds will increase biodiversity of native plant species.The birds will pollinate native species, increasing genetic variation.The birds will pollinate native species, increasing genetic variation.The birds will consume beneficial insects, as well as the pest species.The birds will consume beneficial insects, as well as the pest species.The birds will mate with native birds and create a new species

A bird population nested along the banks of a river and fed off fish. After new homes were built along the river, the bird population declined. A change to which limiting factor was most likely responsible? space water weather sunlight

Which of the following is least likely to cause a species to become extinct due to changes in the environment?Group of answer choicesless genetic variation within the speciesspecific food preferencesmore competition for foodmore genetic variation within the species

Which changes would most likely limit the growth of a plant-eating animal population? Select four options. The number of predators decreases. Steady rainfall increases the number of plants. A spring freeze kills many plants. The number of predators increases. A harmful plant disease spreads through the area. A harmful animal disease spreads among the population.