What is the term for each step in the transfer of energy and matter within a food web? energy path food chain trophic level food pyramid?

Describe the primary and secondary immune response in terms of speed and number of antibodies produced?

The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.

The tubes transporting minerals and water upward are called ?