Erosion is an on-going process that helps shape the Earth's surface. Which of the following is an example of erosion? A. Rocks breaking apart from growing tree roots.
B. Boulders breaking apart from freezing water.
C. Limestone dissolving from acid rain.
D. Soil washing away from major flooding.

by drinking easy

very easy

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation:

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.