Dolphins doesn't have vocal cords, on the other hand generating
sounds is a complex system of shrieks, Squeals, groans, trills, and clicks are generated
by their sphincter muscles inside the blowhole. <span>The
sphincter muscle is a circular </span>muscle<span> that usually retains contraction of a natural
body passageway or opening, which relaxes as required by normal physiological
functioning</span>
What information is collected from a hypothesis and also when they test a hypothesis is also known as collecting data.
Answer:
The correct answer is<u> A. shallow roots that do not reach the frozen soil</u>
Explanation:
The tundra is known for its lack of trees. The short summer season results in a short growing season, which makes it difficult for trees to grow larger. The cold temperature of the permafrost also makes decomposition slower, which limits the amount of nutrients being cycled through the environment.
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