A tissue has the following characteristics: free surface, single layer of cells, cells are narrow and tall, microvilli, many mitochondria, goblet cells. which of the following is most cnosistent with those observations?1) active transport .2) epithelium .3) simple epithelium.4) columnar epithelium.5) cuboidal epithelium.6) squamous epithelium.7) secretion by exocytosis.8) movement of mucous across its surface. A. 1, 2, 3, 4, 7.B. 1, 2, 3, 5,7.C. 1,2, 3, 4, 8.D. 2, 3, 4, 8.E. 2, 3, 4,7.

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.