Answer:
Oxygen and nitrogen
Explanation:
Oxygen and nitrogen are very electronegative than any other element in the periodic table hence they have more tendency to attract an electron towards itself
Well in order for chemical digestion to occur period, a enzyme is needed.
In the mouth this enzyme is amylase
Answer:
Blood cells are a lot smaller than nerve cells and have a disc-shaped structure, both great traits for moving quickly through small spaces. Their disc shape also provides them with a big surface where lots of oxygen can enter the cell.
hope it helps
Answer:
Anterior end
Explanation:
You have a pretty good shot at guessing this, because the earthworm has very little going on at the posterior end except the anus. And you probably saw this in lab, too.
I've attached a picture of the earthworm anatomy. Worms can't smell in the strictest sense, but they can use their receptors as kind of a combo smell-taste thing, and those are located in the anterior end.