B. The nervous system collects and responds to information about the external and internal environment.
Answer:
He
Explanation:
helium has two positive protons and two negative neutrons
and two negative electrons
Cell walls and chloroplasts are structures present in plant cells but not animal cells
Answer:
e. derived characters
Explanation:
Any characteristic change which is transfer to the new species from ancestors but is different from the original character. It will be called as derived character.
But if the same character is transfer from ancestor to the new species this will called as ancestral character.
