Cephalization refers to the concentration of nerve cells and sensory organs at the anterior (head) end of the body.
Answer:
i think it is euless
Explanation:
not really sure but i have a feeling it is correct
Answer:
because, it resembles the properties of alkali earth metals as well as halogens ! OwO
Explanation:
" Hydrogen resembles the properties of alkali earth metals as well as halogens. Hydrogen has one electron in its valence shell and it also needs one more electron to get stable. ... For this the hydrogen is placed separately in periodic table ! "
P.s: sharky said thanks for the points !