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 Seed Starting Tips. Purchase and Prepare Your Tomato Seed Because your garden soil compacts too easily and can harbor organisms that may cause diseases it's a better choice to purchase a prepared seed starting mix. A good commercial seed starting mix is often a blend of peat moss, vermiculite and perlite.