Earthworms use these for anchoring during movment. a. setae b. hearts c. mouth and anus d. dorsal and ventral blood vessels

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons

Which direction does the energy flow in this energy pyramid ?

Which of the following statements about protists are true? a.they are typically found in moist environments. b.they are all unicellular. c.they have a nucleus. d.they are all multicellular.