The answer is the letter c
Answer:
a. are probably built by different genes.
Explanation:
Although sharks and dolphins are aquatic animals belonging to the vertebrate group, sharks are fish while dolphins are mammals. Sharks belong to the class Chondrichthyes which are fish that have a cartilaginous skeleton. On the other hand, dolphins are mammals (class Mammalia) which are animals mainly characterized by the presence of mammary glands. In consequence, both species are not closely phylogenetically linked, thereby those genes involved in the development of the integumentary system (skin) in both species are expected to be different.
Answer:osmoregulation is important in maintaining the salt and water concentration in the body of plants and animals
Explanation
Answer:
Food supply
Explanation:
foods will become toxic and can lose their freshness and value, especially for foods that are of higher quality
A.) Organic fossils. I hope that's right
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