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.
Festlance, this mostly depends on the variety of tomato, climate and age of the seed used. If using a seed instead of a plant to start with, the seed will usually start to sprout anywhere between 2-14 days after planting it. Then the first tomato will be ready for harvesting anywhere between 50-100 days.