They are all compounds. This means that several elements make them up. H2O, or water for example, is a mix of two Hydrogen (H) and one Oxygen (O).
I think the correct answer is receptor. To respond to a chemical signal a cell must have a receptor and also this where the signaling molecule can bind. A receptor is a protein molecule that can receive signals from the outside environment of the cell.
The Black mamba snakes are the fastest snakes in the world.
Answer:
Mass is conserved in living systems through the processes of photosynthesis, cellular respiration, and the carbon cycle. It is demonstrated in cellular respiration through the process of braking down food to provide energy and releasing carbon dioxide.
Explanation:
Would it be predators? Because predators can catch weaker older deer easier than younger healthier ones.
