In multicellular organisms, such as human beings, cells combine to form tissues, which combine to form organs, which combine to form organ systems, which all together make up the organism and enable it to function. This is an example of which theme in biology? Select one: a. structure and function
b. unity and diversity
c. regulation
d. levels of organization

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.

ask your friends for what they got then copy it down if you don't have any friends which is fine than google it or pay the teacher

b. climate change will cause an increase in biodiversity of all ecosystems.

hope this

answer; synapse; i believe this is correct,plz check first good luck;