The correct answer is letter C
Explanation: Conducting scientific experiments is the ideal opportunity to identify the effects of a lurking variable on the response variable. Not all experiments all approved, sometimes performing the experiments are the only way to find out the effects.
House of Representatives and the Senate
Because there wasn't enough water or rain to grow certain type of crops that require a certain amount of water that they did not have.
Answer:
1.9 billion people use social media actively
