mesoderm. in biology, middle layer of tissue formed in the gastrula stage of the developing embryo. At the end of the blastula stage, cells of the embryo are arranged in the form of a hollow ball.
8th Anniversary Gift Ideas. Traditionally, couples give gifts of bronze or pottery to celebrate their 8th wedding anniversary. Bronze is created by combining two different metals, copper and tin, to make something strong and beautiful, just like a marriage brings two people together into something more.
So here is my list of the top birthday presents for a one-year old: 1  1. Plan Toys Hammer Balls (added bonus, this is a green toy company) $20 â $24.99. 2  2. Little Tikes PopTunes Guitar $19.99. 3  3. Green Toys Fire Truck, Dump Truck or Sand Play Set $19.99 â $24.99.  4. Skip Hop Zoo Backpacks $20.