Differentiate among the types of muscle contractions. 1  Isotonic contractions generate force by changing the length of the muscle and can be concentric contractions or eccentric contractions.  A concentric contraction causes muscles to shorten, thereby generating force.
A 1993 Upper Deck Derek Jeter Rookie card number 449 has a book value of about $15.00 in near/mint -mint condition. Professionally graded cards will sell for more. Condition is important. Common flaws with baseball cards include: rounded edges, creases, off centered, and faded color.
The Topps, Donruss, Fleer, and Score 1989 Griffey cards all currently list at $2.50-$6.00. The most interesting Griffey rookie card is the 1989 Upper Deck card, which lists at $15-$40. Baseball card companies flooded the market in the late '80s and 1989 may have been the worst year of over-production. There are probably still millions of 1989 baseball cards still sealed up in packs.