What hypothesis did Darwin investigate by studying the breeding of pigeons with distinctive traits? New species can appear gradually through small changes in an ancestral species.
The amount of variation in a population is related to the type of environment it lives in.
Organisms have only the number of offspring that are supported by the environment.
Some traits appear in each generation, while others seem to disappear in some generations.
Edg 2021 Biology

Read the scenario below and answer the question that follows. hallie is reading a novel in the library when susan, her best friend, slumps down in a chair next to her. susan doesn't say anything, but hallie knows that susan is upset because she is slumping in her seat and rolling her eyes. a psychologist would explain that hallie is interpreting her friend's emotion based on a. the behavioral component of emotion b. her friend's ability to regulate emotion c. the verbal component of emotion d. the physiological component of emotion select the best answer from the choices provided a b c d