Asexual Reproduction https:biologydictionary.net/asexual-reproduction/
1. Budding
2. Binary Fission
3. vegetative propagation
The rest of answers on link
Your question isn't the most clear, but I think your answer is rocks, or more specifically phosphorous rich rocks because the phosphorous will mix with the sediments on the river's/lake's ground forming phosphorous rich rocks.
That means that It'll become a phosphate mineral and later become phosphorous again when the minerals weather.
Hope it helped,
BioTeacher101
The answer is B.<span>Large patches. Sorry man but some plants grow in many cracks in the asphalt.</span>
