Answer please for points

Environmental differences within ecosystems are generally caused by

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?