Product Description: Make a Difference is a super fun science series focused on how ordinary kids can have a positive impact on the world around them. From protecting animals to saving water, each book offers 10 interesting and easy tips that get kids readyand willingto take action.

Product Description: The books in the My Encyclopedia series help young readers discover the wonders of nature. From the ocean to the forest and beyond, the stunning photos and fun and informative texts in these books bring the great outdoors right into your home.

Product Description: Life today is a lot different than it was in the past. Think of the things you have today. The clothes you wear. The kind of home you live in. The foods you eat. Many of these probably wouldnt be the same if you were living in a different period of time...read more

In Recognition of the Forgotten Generation D. L. MULCAHyl Pollen was long believed to serve primarily a single function, that of delivering male gametes to the egge A secondary and generally overlooked value of pollen is that it serves to block the transmission of many defective alleles and gene combinations into the next generation. This latter function comes about simply because pollen tubes carrying defective haploid genotypes frequently fail to complete growth through the entire length of the style. However, the beneficial consequences of this pollen selection are diluted by the fact that the same deleterious genotypes are often transmitted through the egg at strictly mendelian frequencies (Khush, 1973). Gene expression in the pollen might thus at least appear to be a phenomenon of trivial consequence. Indeed, Heslop-Harrison (1979) rightly termed the gametophytic portion of the angiosperm life cycle, the "forgotten generation." This neglect, however, came about despite subtle but constant indications that pollen is the site of intense gene activity and selection. For example, Mok and Peloquin (1975) demonstrated that relatively heterozygous diploid pollen shows heterotic characteristics whereas relatively homozygous diploid pOllen does not. This was proof positive that genes are expressed (that is, transcribed and translated) in the pollen. 1 Department of Botany, University of Massachusetts Amherst, MA 01003, USA viii However, the implications for pollen biology of even this recent and well known study were not widely recognized.

Product Description: Unique layout shows sequential sizes ranging from a tiny hamster to a little boy to the little boys momwho is biggest of all. The rhythmic text helps children retain new vocabulary words. The simple, engaging photos will encourage children to "see and say," while the informational nonfiction text introduces a variety of subjects...read more

Product Description: Introduces manners to children through simple text and photographs, including politeness and sharing.

Product Description: A special cat, a happy frog, a smart fish, and a pack of cavorting canines add up to oodles of fun in this irresistible anthology for young pet lovers.

Product Description: There's fun for everyone when these families get together to bake a cake, visit grandma's farm, take a family photo and welcome a new baby.

Product Description: NO wear and ABSOLUTELY NO overstock/ remainder black marker slashes on page edges. Hardcover book is BRAND NEW and NEVER READ -NO dust jacket as issued. Pictorial hardcover has no blemishes -Book looks just like picture -- Book is crisp, tight, and clean -- you'll hear the book CRACK when opened!! - Published by Scholastic Books...read more

Product Description: School can be full of surprises! Everyone gets in on the fun on field day. One girl brings her dog to school. One boy is quiet - not loud. Another boy loves words. He uses them to surprise everyone - even himself.

Featuring hundreds of helpful graphics, this comprehensive, fact-filled introduction to the world of computers discusses their history and development, hardware and software, operations, and functions and offers extensive information on electronics technology.Provides facts about transistors, radio waves, video tape, video disks, robots, television, lasers, holographs, and communications satellites