Answer:
Cyanobacteria are responsible for first adding oxygen to the Earth's atmosphere.
Answer: i dont know the question
Explanation:
More than one third of North American bird species can be found in wetlands. Wetlands may contains fresh or salt water or both. Biodiversity and nutrient levels are high; many plants and organisms filter out waste materials. Birds like geese, ducks, herons, warbies, and egrets, to name a few, use wetlands for nesting and feeding.
Answer:
Explanation:
plasma/cell membrane and cytoskeleton
