The correct answer is - C. ecosystems.
The ecosystem represents a biological community of organism that interact between each other, and are dependent on one another for their survival, and their physical environment where they live and prosper.
Desert; arid places with very little rain, hot, and with little biodiversity, occupy parts of the western and southwestern part of the United States, and northern part of Mexico.
Tundra; very cold, little precipitations and the one it has comes in snow form, most of the year is winter, occupies the places around the Arctic circle.
Grassland; lowlands dominated with grass, found in the central part of the continent, at what is known as the Great Plains.
Chaparral; Found in California, and Baja California, semi arid place, dominated with evergreen shrubs known as chaparral.
