The sikhote- alin mountains, and the siberian tigers living on them, are separated from other mountain regions in which the tigers could live. the mountains are an example of a/an
choose one answer.
a. mass extirpation
b. invasive species
c. mass extinction
d. habitat fragment

What do scientific models predict will happen to earth's temperature if current trends continue unmitigated? a. earth will heat and cool in a natural cycle b. earth will heat up and then return to an ice age c. earth will continue to warm at a rate of 0.25 c per decade d. earth will start to cool at a rate of 0.25 c per decade appex