He went to the Galapagos Islands and studied the difference in sea-turtles shells and birds beaks.
Answer:
mycelium, hyphae, coenocytic hope this helps out
Explanation:
The third trimester begins at B) seven months.
The first trimester: 1-3
The second trimester: 4-6
The third trimester: 7-9.
Asteroid impact
Volcanic eruptions
Explanation:
Asteroid impact and volcanic eruptions are two common events that could lead to a mass extinction.
A mass extinction is an abrupt decrease in life on earth due some catastrophic event.
- The collision of a large bolide on the surface of the earth is a catastrophe in itself.
- The collision and its aftermath have destructive consequences on life.
- The force of the collision can reverberate in form of vibration throughout the earth.
- It can cause heating of the earth surface.
- Volcanic eruptions can become global phenomenon that upsets the earth balance.
Learn more:
Extinction brainly.com/question/10860460
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3% of earths water is usable as a fresh water source