Neurone X should be motor neurone.
Motor neurone should be the type of neurone after relay neurone. Impulses travel from the relay neurone then to the motor neurone, and the motor neurone passes messages for the effectors usually in reflex actions, where effectors can be muscles or glands.
Answer:The heart isn't the only muscle to benefit from regular exercise. The other muscles in your body enjoy exercise too.
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Explanation:</h3>
When you use your muscles, they become stronger. Strong muscles are also a plus because they support your joints and help prevent injuries
Answer:
covalent bonds and ionic bonds. ionic bonds are created when two things share ions and become one this exist in things like salt, a covalent bond is when the particles just simply stick together such as water
Anther should be the answer