Answer:
all the digestive activities of life (respiration , digestion, excretion, etc) occur at the cellular level.
Explanation:
-Eijiro <3
The correct answer is chitin. This glucose derivative is in
fact the main building block of cell walls in not only arthropods (including
the shrimp), but also fungi and insects, and also has a structural function in
the scales of fish. The most similar commonly-known substance in terms of
function is keratin, which makes up our hair and nails.
Answer:
moving materials in and waste products out
Explanation:
If the a decomposer were absent from the forest, everything would just pile up onto one another and never be returned to the Earth.
