Abiotic things are nonliving and biotic things are living.
1. Cell membrane
2. Ribosomes
Hope this helps!!
Answer:
in explanation
Explanation:
I'd say one species can become two different species by mating. If one species mates with a different species than they carry their genes over to the baby. This would become a repeating cycle making another species.
I don't know if this was the answer you were looking for, but this how animal breeders get a certain type of animal.
Blue is the correct answer
Answer: All have calcium made structures which restricts their degradation and decomposition.
Explanation:
Echinoids and snails have exoskeleton which is hard and made up of calcium carbonate which is the least degradable material even after death of the organisms and remains as traces and remains in the fossils. Also the shark tooth is made of dentin which is a hard calcified tissue which does not decompose very easily. It is denser and harder then the bones. It is surrounded by the enamel shell. The dentin and enamel prevent the degradation and decomposition of the shark tooth for long hence, it gets available as fossil.