Roundworms have taken this last body plan and adapted to thousands of environments with it. From microscopic to maybe a meter long, roundworms are just what they sound like-round worms. At one end, they have a mouth, at the other, an anus, with a tube digestive system in between.
Availability of two-factor authentication for Apple ID Two-factor authentication is an extra layer of security for your Apple ID designed to ensure that you're the only person who can access your account, even if someone knows your password.
RAID 2 The RAID 2 configuration uses data striping (see below) and a fault tolerance technique called parity (see below), it requires at least 3 disks. Two (or more) of the disks are used to store the data and one disk is used to store the parity (see below) information. RAID 2 strips the data into bits, which is why RAID 3 (below) is a better implementation as it strips the data into bytes instead.