In one of her expeditions, a marine biologist finds a new and seemingly adult organism that has a distinct head but an unsegmented body. under which phylum should she classify this organism?
arthropod
mollusk
echinoderm

What have we learned from fossil evidence about evolution? a) it is an abrupt change. b)the process is observable. c) it takes place during one lifetime only. d)the most complex traits are always selected.

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.

2. cheryl hears a new song on the radio every day during the week on her commute to work. surprisingly, when the song comes on at a party on saturday night, she knows most of the words without trying. describe the three ways that we use cognition to learn without reinforcement. which type of cognitive learning without reinforcement best explains how cheryl knew the song lyrics? explain your answer.