Which of the following describes the relationship between elements of an ecosystem? A. Elements of ecosystems are mutually dependent on each other. B. There is no relationship between elements within an ecosystem. C. Abiotic elements are dependent on each other, while biotic elements are not dependent each other. D. A cause and effect relationship is limited to abiotic elements only.

Which is an accurate description of the physical characteristics of poland? its fertile soil is found only along riverbanks, and its mountainous region in the northwest has few mineral resources. it is mostly flat with fertile soil except in the east and northeast, and the mountainous region in the south has large deposits of coal and copper. it is covered with thick forests, and it has large reserves of coal, petroleum, and natural gas. its landscape is dominated by plateaus, mountains, and high ridges, and it has large deposits of sulfur and copper in the northeast.