Which of the following statements correctly compares an alpine ecosystem two tundra ecosystem. a. they are both found in the north eastern united states. however, tundra recives more rainfall in alpine ecosystems. b. they are both found in mountain regions of the united states however tundra has more trees than alpine ecosystem. c. they both have arid conditions however tundra is found in south western united states in alpine ecosystems are found in northeastern united states. they both have arid conditions however tundra is found in south western united states and alpine ecosystems are found in northeastern united states. d. they both have colds severe conditions however tundras found in the northmost region of the united states in alpine ecosystems are found in mountain regions.