In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream. Digestion is a form of catabolism that is often divided into two processes based on how food is broken down: mechanical and chemical digestion. The term mechanical digestion refers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed by digestive enzymes.
shibboleth (plural shibboleths) 1  A word, especially seen as a test, to distinguish someone as belonging to a particular nation, class, profession etc. 2  A common or longstanding belief, custom, or catchphrase associated with a particular group, especially one with little current meaning or truth. It's about time we abandoned the bourgeois shibboleth that earning money makes you a better person.
Gabbro is a coarse-grained, dark-colored, intrusive igneous rock. It is usually black or dark green in color and composed mainly of the minerals plagioclase and augite.It is the most abundant rock in the deep oceanic crust.Gabbro has a variety of uses in the construcion industry.he word basalt is used because the rocks of the oceanic crust have a basaltic composition. However; only a thin surface veneer of oceanic crust is basalt. The deeper rocks of the oceanic crust are generally coarser-grained gabbro.