Acidity is determined using a pH indicator
Answer: A. Chemical signal
Explanation:
Chemical signal is the type of communication which coordinates actions between neighboring cells
.
This ability originated in single cells organisms and was essential for the evolution of multicellular organisms because after a cell receives a message, it is transferred across the plasma membrane and changes are brought about within the cell in response to this message.
Answer:
The rabbit that best adapted to its environment was the gray rabbit.
Explanation:
<span>carbohydrates ...................</span>