Answer:Exocrine glands are glands that secrete substances onto an epithelial surface by way of a duct.
According to the preface to The Pluto Files, what best describes the information the book will include a record of Pluto's rise and fall as a planet. The said book was originally published last January 26, 2009 by the author <span>Neil deGrasse Tyson.</span>
<span>And of a large group of organized compounds occurring in foods and living tissues. </span>
<span>One plant is called angiosperms </span>