Define ecosystem.
define nature.
plz don't copy paste

An ecosystem is a biological community of organisms that live together in a physical environment to interact mostly based on survival and cohesion.

Nature goes along with ecosystem. it is a system of things in the physical world that involves everything in it such as plants, animals, mountains, oceans, etc. And 0f course none if this includes anything created by man.

- Hope this helps

i would say the answer is b. zigzag lines of the leaves. i believe this is the answer because zigzag lines go in different direction while the other options like: the vertical lines of the trees, the dotted lines on the road, and the curved lines of the park benches go in one direction.