The frustration comes when when you realize that Christmas advertisers have been wooing your kid since September. The befuddlement is what you feel about the electronic gizmos and video-doodads the advertisers are pushing on your kid. And the ear plugs are what you need, as said kid orders you-starting in early October-to make sure Santa brings him Cheap Janoris Jenkins Jersey , on Christmas morning, the latest version of the New, Improved, Most Expensive Widget, or he'll die of a badly broken heart.
You can't blame your child-that Widget looks so beautiful and perfect on that commercial Cheap Damon Harrison Jersey , and the child-actors playing with it look like the happiest children in the world. Who wouldn't want a new Widget? But then the next commercial convinces your son he needs a Whatchamacallit, too. Or he'll die.
You don't want to lose your son at this tender age over a Widget, but you can't see yourself (I mean, Santa) spending two hundred bucks apiece, for glorified toys that he'll outgrow Cheap Olivier Vernon Jersey , or tire of, before the New Year. Go ahead and pick one, the Widget or the Whatchamacallit, and take the gamble that he'll survive without both.
Then, why not consider getting him (I mean Cheap Aldrick Rosas Jersey , asking Santa to bring him) some oldies-but-goodies? There are dozens of toys and gifts that you enjoyed as a kid, which are just as great today as they were, then. And your son will enyoy them for years, rather than days.
Remember Tinker Toys? They're still around, and though they may lack the initial appeal of anything that has to be plugged in and makes noise Cheap B.J. Goodson Jersey , they provide a new experience for your child, every time he opens that plastic-and-metal canister. Remember when you believed, you were the first kid ever, to build a car that really rolled, out of Tinker Toys?
Lincoln Logs are still providing kids with construction adventures. They're "new-and-improved" Cheap Bobby Hart Jersey , but still basically the same notched-log pieces you remember, with roof-pieces and windows added. Years from now, when the Widget has become an obsolete antique, your son will suddenly pull the Lincoln Logs out of the closet and build something, just for fun.
The most versatile of all the "build-it-yourself" sets-Legos-is another childhood staple which can still keep kids occupied for years.
Even Silly Putty and Play-Doh are still around Cheap Paul Perkins Jersey , in new-and-improved forms. They may drive parents slightly batty, but kids never seem to tire of the myriad ways they can be used.
The best thing about these "golden oldies" is the cost and the value. They're relatively inexpensive, and will entertain your son-and any younger siblings he may have-for years. Assuming he survives Christmas without receiving both the Widget and the Whatchamacallit.
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SAN FRANCISCO， Dec. 23 (Xinhua) -- A new study indicates that some marine worms go through a prolonged phase， probably for months， with little more than head.
The study about the trunk-less larval stage， a developmental strategy known as indirect development， known to be shared by many animals in the ocean， may shed light on the biological development of early animals.
"Indirect development is the most prevalent developmental strategy of marine invertebrates and life evolved in the ocean，" said Chris Lowe， an associate professor of biology at Stanford University. "This means the earliest animals probably used these kinds of strategies to develop into adults."
Most research animals commonly found in labs， such as mice， zebrafish and the worm C. elegans， are direct developers， species that don't go through a distinct larval stage.
The research targeted a group of marine invertebrates called Hemichordata， because there is already a wealth of molecular developmental work done on direct developers in this group， and finally focused on Schizocardium californicum， a species of acorn worm and indirect developer in the Hemichordata phylum.
At Stanford's Hopkins Marine Station， graduate student Paul Gonzalez， lead author of a paper published in the journal Current Biology， became a hunter， breeder and farmer of the rare marine worm.
"Terrestrial， direct developing species develop fast， their life cycle is simple and they are easy to rear in the lab，" said Gonzalez. By comparison， indirect developers develop slowly， have a long larval stage， and their larvae are difficult to feed and maintain in captivity. The reproductive adults are also challenging to keep in the lab.
After spending months perfecting the rearing and breeding techniques needed to study these worms， the researchers were able to sequence the ribonucleic acid (RNA) from various stages of the worm's development. They found that in the worms， activity of certain genes that would lead to the development of a trunk are delayed. So， during the larval stage， the worms are basically swimming heads.
"When you look at a larva， it's like you're looking at an acorn worm that
decided to delay development of its trunk， inflate its body to be balloon-shaped
and float around in the plankton to feed on delicious algae，" Gonzalez was
quoted as saying in a news release. "Delayed trunk development is probably very
important to evolve a body shape that is different from that of a worm， and more
suitable for life in the water col. Wholesale Jerseys Free
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