Answer:
I jump when I walk and sit when I stand.
I am all around you, but you cannot see me. I have no throat, but you can hear me. Valued during summer but despised in the winter. What am I?
I am asleep when you are awake I am awake when you fall asleep. I can fly but no feathers to aid my flight.
I march before armies, a thousand salute me. My fall can bring victory, but no one would shoot me. What am I?
I have a little pool with two layers of wall around it. One white and soft and the other dark and hard. Amidst a light brown grassy lawn with an outline of a green grass.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.