Questions

Footsteps. 

Yes, as you walk forward, you will leave the footstep behind you.

Innovation is generally considered a process that brings together various novel ideas in a way that they have an impact on society. It differs from invention in that innovation refers to the use of a better and, as a result, novel idea or method, whereas invention refers more directly to the creation of the idea or method itself. Innovation differs from improvement in that innovation refers to the notion of doing something different rather than doing the same thing better.

Distributed systems work in a network. They can share the network resources,communicate with each other.

Squirrels build their nests in summer season as the sticks with what they bulit are dried and are less weight and the nests will be used for the rainy season.

Cholesterol is referred as an amphipathic molecule, that it contains its hydrophilic and hydrophobic parts.