Dysthymic disorder (dd) is a mood disorder that is generally chronic and has symptoms than major depressive disorder (mdd).

Which best compares habitat and niche? o niche is a place in which organisms live, and habitat is the way in which an organism fits into its habitat.o habitat is a place in which organisms live, and niche is the way in which an organism fits into its habitat.habitat is a group of organisms that live in an area, and niche is a specific species that lives in that areao niche is a group of organisms that live in an area, and habitat is a specific species that lives in that area.

Light sensitivity in euglena is provided by the

Define adaptation. why do organisms adapt? give an example.