Smog, because it's a fog or haze combined with smoke and other atmospheric pollutants.
Population because you are holding it
Answer:
Growth and Maintenance. Your body needs protein for growth and maintenance of tissues. Yet, your body’s proteins are...
Causes Biochemical Reactions. Enzymes may also function outside the cell, such as digestive enzymes like lactase and...
Acts as a Messenger. Some proteins are hormones, which are chemical messengers...
Explanation:
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The sponges draw water carrying food particles into the spongocoel using the beating of flagella in the choanocytes. ... Compare the structural differences between Porifera and Cnidaria. Poriferans do not possess true tissues, whereas cnidarians do have tissues.