Detailed list of causes of Inability to concentrate. The list below shows some of the causes of Inability to concentrate mentioned in various sources: ADHD; Alzheimer's disease; Anxiety; Brain injury; Cannabis; more causes...Â» See full list of 30 causes of Inability to concentrate. How Common are these Causes of Inability to concentrate?
1 73 x 73 pixels -- This is the second largest size that your Twitter profile photo will be displayed at, and is displayed on your profile page above your bio. 2  48 x 48 pixels â These are the dimensions at which your profile photo will be most commonly seen â in your stream.
Videos on Twitter have a maximum video length of 30 seconds (you will be prompted to edit videos to 30 seconds or less in length if you upload on the web) The video format supported for mobile apps are MP4 and MOV. The video format supported on the web is MP4 with H264 format with AAC audio.