Because they are located above 15000 feet areas in the tierra nevada elevation zone have ecosystems

a.)grassland
b.)highland
c.)tropical forest
d.)chaparral

a. european colonies

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.

the answer is translated आशा है कि मैंने मदद की.