The outer ring is is the ever first ring but the inner ones tell if it’s old or not.
A&E Maybe hope this helps you out for this subject
They construct dams and create an ecosystem for other species . Because of their dam building nests become available for birds, fish population increases and waterfowl population goes up
Answer:
Your DNA could stretch from the earth to the sun and back ~600 times. ...
We're all 99.9 percent alike. ...
Genes make up only about 3 percent of your DNA. ...
A DNA test can reveal you're more Irish than your siblings. ...
The human genome contains 3 billion base pairs of DNA. ...
Your DNA could link you to places you'd never imagine.
Explanation:
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