The need for natural resource should increase.
NOUN
the natural coloring matter of animal or plant tissue.
VERB
(pigmented)
color (something) with or as if with pigment.
"pigmented areas such as freckles"
Riparian zones are important to the natural environment because they function as natural biofilters and protect the aquatic life and the aquatic environment.
Answer:
i will find the answer to this question immediately
Explanation:
Perhaps the answer is "physical characteristics". I am simply making an educated guess, however I do know early philosophers classified organisms into two groups, Plants and Animals, and identified them based on physical characteristics.
