It is your job to group these four animals based on like features. First you group the animals by size: very large and not very large. Into the very large group you put the giraffe and elephant. You are left with the lion and alligator. What feature could you use to put these two animals into different groups?

the answer to you question is   jet streams

i would go with b

cytokinesis occurs after telophase so that eliminates d

and the entire reason for cytokinesis is for cellular reproduction

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.