When presented with the question “Does Plant Food X have an effect on the production of tomatoes?” Develop a hypothesis to answer this question and then design a small controlled experiment to test the hypothesis.

i think that d. wind is the answer.   i missed the question when i answered a. currents.

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.

answer axon terminal,synaptic cleft; and motor end plate;

which is not a category of marine organisms