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.
The best time for planting grass seed in Missouri is between Aug. 25 and Oct. 10. Keep in mind that lawns seeded within a week of Labor Day are more likely to fill in completely for winter and produce a thicker, denser turf appearance for the following spring compared to lawns seeded in October.