You observe a tissue under a microscope. There appears to be a lumen on one side of the issue. Lining this lumen is a single layer of epithelial cells that seem to have long, fingerlike projections Beneath the projections, the cells seem to have the shape of shoeboxes and are packed tightly together. What type of tissue are you looking at? A. stratified squamous epithelium B. simple columnar epithelium C. simple cuboidal epithelium D. transitional epithelium

The body is protected against harmful flu viruses by

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.