15×3=45 because p=m.v so simply finish this question.
Organisms that have many characteristics in common are grouped into a ’species’ - hope this helped :)
It all depends on the species, some lose all of their leaves for part of the year while others lose their leaves before the next growing season, retaining some during winter or dry periods.
They're attached to the plasma membrane.
(it's at the midpoint of the cell.)
The majority takes place in the small intestine