Study the population growth curve of three species of squirrels on an island. Red squirrels and gray squirrels have been the native species on the island for the past 1,000 years. The black squirrel is an invasive species. Invasive species aren’t native to the ecosystem. They move into an ecosystem because of natural changes or human intervention. In 2005, black squirrels entered this island. Red squirrels and black squirrels have identical food requirements, but gray squirrels eat different kinds of food. What’s the plausible reason for the population change?
A) The red squirrel has no predators, and the black squirrel has many predators.
B) The gray squirrel competes with the black squirrel for food.
C) The black squirrel has no predators, and the red squirrel faces higher competition for resources.
D) The black squirrel has many predators and faces tougher competition for resources.
Answers: 2
Other questions on the subject: Biology
Biology, 21.06.2019 22:30, suieemage
Last week i was assigned a thematic. we have groups of three but the people i was assigned with haven't been in school for days. i would appreciate if anyone can me with my thematic . i highlighted most of the important steps and i circled my thematic topic. in desperate need : ( its due on february 19
Answers: 1
Biology, 22.06.2019 15:40, lovelyashjoy
What evidence could be used to convince policy makers to change a shipping lane from going through a whale breeding ground? information on the number of all whale species currently alive information on the number of all whales hit by boats in the given area information on the number of whale deaths in the world's oceans information on the number of whale offspring born every year. (a) scientists could collect and combine data on fish populations all around the world to show that their populations are declining. (b) scientists collect and combine data on fish populations all around the world to show that their populations are increasing. (c) scientists work together and use past data to show that fish populations are becoming locally extinct in some areas. (d) scientists work together and use past data to show that some fish populations are adapting to environmental changes.
Answers: 1
Do you know the correct answer?
Study the population growth curve of three species of squirrels on an island. Red squirrels and gray...
Questions in other subjects:
Mathematics, 27.02.2020 01:56
