What was anton van leeuwenhoek's contribution in the development of cell theory? a. he built the first compound microscope. b. he was the first to observe live cells in a sample of pond water. c. he concluded that cells exist in liquids. d. he stated that all living things are made of cells. a. he built the first compound microscope. b. he was the first to observe live cells in a sample of pond water. c. he concluded that cells exist in liquids. d. he stated that all living things are made of cells.

Which of these best describe conduction? a. transfer of heat between two objects that are touching b. transfer of heat by the actual movements of warmed matter c.the process in which energy is emitted by one object, transmitted through space, and absorbed by another d. the process in which energy is released by molecules

This group of organisms perform the process of ammonifcation. a. herbivores b. decomposers c. carnivores c. plants

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