For example, an individual can be AB, D positive, and at the same time M and N positive (MNS system), K positive (Kell system), Lea or Leb negative (Lewis system), and so on, being positive or negative for each blood group system antigen.
Nearly every list of easy-to-grow vegetables starts with lettuce, and with good reason: so long as you plant it at the right time, it will grow from seed with little attention. The right time is when the soil is cool, in the spring and fall. In Arkansas, you can plant lettuce seeds from February to April, and again in September for a fall harvest.
Tomato seeds should germinate and sprouts emerge at 75 - 80*F where possible. Emerged seedlings benefit from temperatures holding at 65 - 75*F until the first set of true leaves are nearly fully emerged or fully emerged with just the wee bit of the growing tip emerging from between the first set of true leaves.