The black walnut tree secretes a chemical from its roots that harms neighboring plants which leaves more light for the black walnut to grow. Which example of species interaction does this represent? A: Predation
B: Parasitism
C: Competition
D: Mutualism

Which of these is true for bacteria because they are prokaryotic cells? a. they can engulf body cells in order to make memory cells. b. they must invade viruses in order to reproduce. c. they are much larger than eukaryotic body cells. d. they can reproduce on their own outside of other cells.