Answer:
A nerve impulse
Explanation:
It's important to note that these signals not only connect the brain and spinal cord, but they also send signals to muscles and glands. People talk about nerve impulses when they talk about the electrical signal that goes down an axon.
Answer: <em>Photosy</em><em>nthesis</em>
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Some producers of the savanna are:
Jackal berry trees.
Acacia trees.
Jarrah trees.
Bermuda grasse.
River bushwillow.
Kangaroo paws.
Star grass.
Lemongrass.
contraction and relaxation of the heart
