Some scientists look at the boundary between two biological communities and see a sharp dividing line. others looking at the same boundary see a gradual transition with much intermixing of species and many interactions between communities. why are there such different interpretations of the same landscape?

Need in all of themmm only answer if you know plsssss

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.