D is the most likely answer because as the glacier moves across the landscape, it leaves many deep ridges into the earth. They eventually collect water and form deltas.
Answer: These animals eat algae in the water.
Explanation: They clean the water in other words.
Answer:
H. pylori (Helicobacter pylori) is a bacteria that maintains homeostasis of the human body by establishing chronic infection from ulcers and gastritis and using the method of autophagy to cleanse the body of damaged cells. H. pylori also contributes to the workings of the immune defense system.
Ionic bonds involve the gaining and losing of valence electrons between atoms, while covalent bonds involve the sharing of valence electrons between atoms