Match the following terms and definitions. 1. the testing of a hypothesis in duplicate with only one factor being different hypothesis 2. an assumed explanation for a problem scientific method 3. a recognized means of inquiry to provide scientific answers to questions controlled experiment 4. supported by evidence gathered over a period of time theory

answer; i believe the correct answer is (sporophyte);

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.