Answer:
B. Produce cells that are genetically identical to one another
Shrew are both a secondary and tertiary consumer. Why? Well, shrews are mole-like animals that tend to prey upon herbivores and also carnivores, making shrews an omnivorous animal.
Island isolation promotes allopatric speciation. Species are separated by the physical barrier which is in the ocean and islands are being isolated by each other by bodies of water.
There is no gene flow which occurs between the separated species. Living in the distinct island. The species get adopted by the island to the environment.
They then diverge as they separate species.
It is a natural emulsifier. An emulsifier keeps liquids in the mix from separating, such as oil and vinegar.