A bug repellant is sprayed on one arm the other arm is not sprayed. The number of bug bites is recorded after 2 hours. Which one a independent?

Why did roosevelt support a “europe first” strategy even though it had been japan that had first attacked the united states?

How does a comet change when it comes close to the sun

Match the vocabulary word with its meaning. 1. gender a large-scale spread of a deadly disease 2. pandemic the development and use of machines, devices and ideas to further people's knowledge 3. technology the sex of a person, whether male or female