Answer:
It has 4 trophic levels.
Explanation:
The first level would be the producers, followed by the primary consumers, then the secondary consumers, then the tertiary comsumers.
/ Tertiary consumers \
/ Secondary Consumers \
/ Primary Consumers \
/ Producers \
/________________________________\
Most induced abortions occur up to 13 weeks of gestation.
The first one, Added removed or changed. Mutation as in anything that would cause the slightest change.
Migration i think is the answer
There is also a corresponding diffusion of Chinese and Japanese's forms along this zone
