1 Black skin and Asian skin have thicker and more compact dermis than white skin. This is also why blacks and Asians have fewer facial wrinkles than whites.  Black skin has more casual lipids and more moisture in the stratum corneum than white skin.
A software development kit (SDK or  devkit ) is typically a set of software development tools that allows the creation of applications for a certain software package, software framework, hardware platform, computer system, video game console, operating system, or similar development platform.
WordPerfect for Windows Temporary file. CHK is a file extension for a temporary file format used by WordPerfect for Windows. A CHK file can be created before and in between saves to safeguard data or to recover data after a program crash. MIME type: application/wordperf, application/wordperfect, application/chk. The CHK file extension is also associated with file fragments saved by Windows Disk Defragmenter or ScanDisk. Learn more about CHK files: Ask for answers to CHK-related questions at IT Knowledge Exchange. Visit the Corel WordPerfect web page.