Answer:
you are using your shoulder muscle. The reason you are using this muscle is when you put your arm strait up there is no reason to use a bicep or tricep muscle.
Explanation:
Pyruvic acid binds with Coenzyme A (CoA) to form acetyle CoA. The acetyle CoA begins the Kreb Cycle.
The two animals which use echolocation are bats and dolphins.
Both hunt their prey by articulating high-pitched sounds and listening for the echoes.
<h3>What is echolocation?</h3>
Echolocation is a method used by bats, dolphins and other animals to select the location of objects using reflected sound. This allows the animals to move around in pitch darkness, so they can guide, hunt, identify friends and enemies, and avoid obstacles.
Thus, bats and dolphins are two animals that use echolocation.
To learn more about echolocation click here:
brainly.com/question/3942501
