The answer would be letter C.
Answer:
(1)
Explanation:
there are different divisions of the spinal cord but as a whole there are 31 segments
A toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.
D. Photosynthesis only takes place in the light, while cellular respiration takes place in the light and dark.
Answer:
Mutations in genetic code occurs when DNA is being duplicated.Any changes in the base pairs leads to mutations by trasition or transversion. Change in amino acid leads to change in sequence and thus, mutation. This si carried on to new generation, if it takes place in germ cells.
