Feathers either play a role, or may have played a role, in . Feathers either play a role, or may have played a role, in . courtship extended hops flight gliding all of these

Plz will mark! the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Diagram of the evolution of land plants?

About how much of the cell mass is watet