Which statements are patterns in the fossil record?

(Select all that apply.)

Earth’s climate has changed between hot and cold over time.

The number of organisms living on Earth shows a slow and steady increase.

The gas ratios in the atmosphere have changed over time.

Fossils belonging to the same animals are seen only on connected continents, such as North and South America.

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.