According to the video, fossils provide each of the following except: a. Examples of transitional species b. A complete record of past life on Earth c. Physical proof of extinction and speciation d. Evidence that evolutionary change tends to be gradual

According to the video, fossils provide each of the following except:

b. A complete record of past life on Earth

Explanation:

The reasons behind this answer are that one single fossil can include the whole record of life forms on earth's history. It might only contain a fraction of a form of life because the majority of fossils don't include more than woven bone. Therefore, it is only a fraction of the living being. also, it doesn't contain a record of its evolutionary chain or that the species of the fossil became extinct. We could find a crocodile fossil and they are still alive in modernity.

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.