I think it is C not 100% sure though
Well there different because a habitat is the environment in which the animals live and a niche is the role animals play in that environment. So they are different but they work hand & hand in creating a good environment.
Answer:
Gram-negative bacteria
Explanation:
When the bacteria took pink color (safranine), it means they are gram-negative bacteria. Gram-negative bacteria have thick cell walls it does not take crystal violet stain as its cell wall is thicked. It take-up counterstain safranine and seen pink in the microscope.