Which level of organization describes blocks of wood ducks interacting with algae and elm trees a) organism b) population c) community d) ecosystem

D. Ecosystem

Explanation: The ducks are interacting with trees and algae with are all part of an ecosystem.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

the titanic would be the correct answer