Which of the following causes tornadoes
1. cool, dry air meeting warm , moist air
2. cool, moist air meeting warm ,dry air
3. typhoons losing energy over land
4. eastern air meeting western air

Is laundry detergent an acid or a base?

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon