Answer:
Explanation:
it really depends on the animal but its blinking
The substance must be able to alter its physical characteristic (for example, its color) in accordance to a change in pH. One example of this is litmus paper, which becomes red under acidic conditions and blue under basic conditions.
Answer:
cell walls and chlorophyll
Explanation:
they are the key difference between the two types of cells .plant cells have chlorophyll and cell walls while animal cells only have a cell membrane
