It doesnt have structures that can be preserved in a fossil.
Explanation:
I'm assuming you're on Pennfoster cause me too.
4 options I'm not sure so correct me if I'm wrong
1. No fossil records exist for sharks.
( we have ancient shark teeth )
2. Salt water would degrade the fossil over time
(Idk maybe)
3. The species has survived too long
4. It doesnt have structure that can be preserved in fossil
( sharks are mostly collagen which doesnt preserve well, except teeth)
I'm about to submit my test I'll edit if I'm wrong.
Edit . I'm wrong
Silk is not a major Export of Southern Africa This time
This time, the major export of Southern Africa came from Agricultural and Mining Sector, such as : Vanilla, Coffee , Tobacco, Gold, Platinum, Diamond, and Silver
Wheat because of the texture and corn couldn't be it because the zone
Answer:
The volcano injected some 15 billion tons of sulfur dioxide into the stratosphere. There it reacted with water to form a layer of aerosol particles, which are primarily sulfuric acid droplets. Winds have take those aerosol particles all around the world. The stratosphere lacks rain clouds as a mechanism to wash out pollutants fast. This heavy influx of aerosol pollutants will remain in the stratosphere for years until natural chemical reactions and atmospheric circulation can filter them out.
Explanation:
