The most common form of air pollution in the San Antonio region is. ground-level ozone, a major component of smog. Ground-level. ozone forms readily in the atmosphere during warm, sunny days. Sunlight causes chemicals from the fuels we burn (e.g., gasoline. and diesel) and vapors from such products as gasoline and paint.
Cover Photo Dimensions. The Facebook cover photo area is 851 pixels wide by 315 pixels tall. Photos uploaded for use as a cover photo must be at least 399 pixels wide. Like profile photos, these photos are resized to comply with the cover photo template if they are smaller than the 851 pixel width.
These guidelines will help you select and edit your shared images for optimum quality: 1  Recommended upload size is 1,200 x 630 pixels. 2  Will appear with a maximum width of 470 pixels in Facebook feed. 3  Will appear on a Facebook page with a maximum width of 504 pixels.