Is blog a abstract or concrete?

Which type of membrane junction is an example of a tight junction? Resistor lead joined by twisting together? How many grains in a teaspoon? An ecosystem is made up of both? What pairings match protozoa with the structures they use to move? What is the special name given to water diffusing through a membrane? What are stromboli and Krakatoa? What is the temperature on mercury and Saturn? What myths do the ancient Japanese use to explain tsunamis? Why does a seedling wilt when it is transplanted from one pot to another? What is a deposition of a plateau? Can you put acrylic in the freezer? Many people died of pompeii died of suffocation at the eruption of mt. vesuvius.what cause their suffocation? When is daylight savings for fall 2012? What conditions need to be in place for a bushfire to start? How do you calculate total iron) in sponge iron if metallic iron is known? What rhymes with binoculars? How many pounds is in 800 grams? What would most likely happen if most of the bacteria and fungi were removed from an ecosystem? Does the nucleus gives instructions to the cell?