Red squirrels usually eat hazelnuts, but due to a reduction in their food source, they had to share resources with squirrels. The number of red squirrels decreased over time, and gray squirrels gradually replaced the red squirre
they are better adapted to the environment. This is an example of (1 point)
O natural selection.
O survival of the fittest.
O competitive exclusion.
O resource partitioning.

Ameadow ecosystem includes many species of grasses and small shrubs, several herbivores, and a few carnivores. a fungus colonizes the meadow and kills most of its vegetation. what is most likely to happen to the populations of herbivores and carnivores in the ecosystem? a. the populations of herbivores and carnivores will increase because there will be less competition for chemical energy. b. the populations of herbivores and carnivores will remain stable because the fungus cannot infect these organisms. c. the populations of herbivores will decrease because of vegetation loss, but the population of carnivores will remain stable. d. the populations of herbivores and carnivores will decline because less chemical energy will be stored in the ecosystem.

Which is the correct formula for photosynthesis

Many organizations release indexes used to measure the development of the world's countries. as we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. in your opinion, what are the three most important factors we can use to determine how developed a country might be? explain your answers in a few sentences.