The correct answer is C. increase
The more the population density rises and the more competition is increased, the higher the birth rate will be.
I believe it is B hope this helps and have a great day :-)
Answer:
Independent Variable= Length of chalk.
Dependent Variable= Height of bubbles
2 Constants= Amount of vinegar, Color/Type of chalk
The answer is B. Phoenix, Arizona
Answer:
Richter or Mercalli Scale.
Explanation: