It represents the cycle of life, because a tadpole should turn into a frog.
It is not it something like sand because it would keep the fossil preserved.
You can either drive home, get a taxi and on the next day get the car or, if possible, go walking.
Hope it helped,
Happy homework/ study/ exam!
Because at that point, the egg would already be fertilized. Now in cases like identical twins, two sperm must enter the egg at the exact same time.
