Which of the following is most helpful for identifying an organism using a dichotomous key? Its average lifespan

Its sources of food

Its habitat

Its physical structures

Its physical structure

Explanation:

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

i think its 100.

hope this !