B. Chitin
that' because both animals and fungus are eukaryotic and heterotrophic, so they share same characterstics in terms of feeding and cellular structure. In addition to both share the same protist supergroup, which is (Unikonta).
Answer:
Variation
Explanation:
there are multiple different types of species.
The White Dwarf star has a high temperature but low luminosity.
Ok so choose 2 ecosystems which is not that hard aquatic and terrestrial research your information on the sight i can not do the work for you, don't forget to check your spelling and punctuation