Scientists distinguish whether an entity is living or nonliving by describing which aspect of life?
a. characteristics
b. value
c. length
d. quality

answer; i believe the correct answer is (replication is not conservative);

a community that experiences major changes undergoes progress

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.