Why is a food chain is the simplest model of energy flow between trophic levels in an ecosystem? because it represents several pathways of energy flow
because it is more complex than a food web
because it represents only one pathway of energy flow
because it only considers producers and primary consumers

The typo in the quiz is confusing me a lot lol

What can be found in every skeletal muscle? a. nerves, bones, cartilage, and connective tissue b. tendons, cartilage, nerves, and blood vessels c. muscle fibers, nerves, connective tissue, and blood vessels d. tendons, nerves, blood vessels, and bones

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.

In "the man in the water," what was the remarkable occurrence that rosenblatt reported?