Answer:
What disaster? I can explain it if there is a pic or something
Your answer is B. hope this helps
It decreased the amount of carbon dioxide in the air and increased the amount of oxygen because plants go through photosynthesis and convert carbon dioxide to oxygen in the process.
Answer:
The gene is called: HERC2.
Explanation:
"Scientists studying the genetics of eye color have identified that a mutation to a separate, nearby gene called HERC2 is the cause of blue eyes. This alteration switches off OCA2, the gene that determines the amount of the brown pigment melanin that we make. Today, around 20-40% of European people have blue eyes."
I hope this helps!