A front is a place where 1. precipitation occurs
2. two air masses meet
3. air is moist and cold
4. air is hot and dry

Why does a tidal bulge occurs on opposote sides of earth

Which region was the hearth for the largest number of agricultural animals such as pigs sheep and cows

Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. wavelength c. brightness d. intensity