Hi! human,dog are multicellular organisms. Nucleus,cell membrane, cytoplasm and mitochondria are 4 things that plant and animal cells have.
Answer:
Because God made it that way :D
Explanation:
A community is diverse species living together
An Ecosystem is all the living and nonliving factors that affect an organism
Answer;
-Proteins play a role in transport, enable movement, provide structure and support, and help make chemical reactions happen.
-Nucleic acids carry genetic information, determine the structure of proteins, and help build proteins.
Explanation;
-Biological macromolecules are the large molecules necessary for life, include carbohydrates, lipids, nucleic acids, and proteins.
-Each of these types of macromolecules performs a wide array of important functions within the cell; a cell cannot perform its role within the body without many different types of these crucial molecules.
