Answer:
A barter system is an old method of exchange. Th is system has been used for centuries and long before money was invented. People exchanged services and goods for other services and goods in return.
Explanation:
Normally when the nerve impulse reaches the axon tip then it is ready to pass on to the next structure, therefore if the tips of the interneurons axon were damaged then it means the process of transmission from the axon to the next structure will not take place. Interneurons relays signals between the sensory neurons and the motor neurons, therefore with damaged tips the relay of information between the sensory neurons and motor neurons will not take place.
Answer:
switch photosynthesis and celular respiration
Answer:
Scientific investigations produce evidence that helps answer questions and solve problems. If the evidence cannot provide answers or solutions, it may still be useful. It may lead to new questions or problems for investigation. As more knowledge is discovered, science advances.
