Answer:
A dolphin breathes through a single blowhole on the top surface of its head. The blowhole is covered by a muscular flap, which provides a watertight seal.
A dolphin holds its breath while below water.
The dolphin opens its blowhole and begins to exhale just before reaching the surface of the water. To open the blowhole, the dolphin contracts the muscular flap.
Explanation:
Answer: chemical change
Explanation: The banana itself is going to exhibit different properties (it turns black) chemically. Thermal change describes heat, physical change describes it when the chemical properties remain the same. change of state is like liquid to gas. hope this helps
Melanin provides pigmentation to the skin and it also provides UV ray protection (which is its role in the epidermis).
I Believe the answer to your question is True.<span />
