Answer:
Its proably A beacause thats how most scientists acheived their goals
Answer:
pygrogen
Explanation:
Fever is initiated when a substance in circulation, called a(n) pygrogen, acts on the hypothalamus causing it to reset body temperature to a higher setting.
Well some similarities are that vertebrates have no back bone but on the other hand the <span>invertebrates have no backbone</span>
Answer:
To produce saliva which breaks down food
An enzyme found in deep ocean organisms that allows them to grow.