They decrease because the zebra mussel were taking their resources. Leaving them nothing to eat.
If it is for Odesseyware the answer is all industrial nations.
According to the cladogram, arthropods are MOST closely related to which group of organisms? mollusks. annelids. echinoderms.
Answer:
Red blood cells, root hair cells in plants
Explanation:
Red blood cell: it has no nucleus. It offers the cell to carry more hemoglobin
Root hair cells in plants: they have a large cytoplasm which enables them to take water from the soil.
