To whom it may concern, or, dear future owner I have this heart but I can't control it
It loves what it loves, it does what it wanna
Tried to lock it up, but it jumped back on my shoulders
Don't get me wrong, it's a good heart and it's golden
But it's been stolen, on top of that it's been broken
Drug through the mud, it's driving me insane
Tryna spread love, pickin' fights with my brain
Don't want it literally, so over it mentally
So tired physically, it distracts and hinders me
So it's for sale, the best offer gets the box
Gift from my mother but a curse from my pops
Kinda hurts when it locks but it'll get better
Right now I'm tryna focus on putting it back together
After I'm done, you can come pick it up whenever
So I can focus on gettin'

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Which scenarios are most effectively explored by conducting an experiment? there is more than one correct answer. select all that apply. researchers want to study the effectiveness of a particular drug for treating migraines. they want to know which dosage of the drug yields the best results with the least side effects. to ensure fair results, the researchers want to ensure that participants and dosage administrators do not know which dosage participants receive. a teacher wants to plan a class fieldtrip and quickly determine where students prefer to go for the class fieldtrip. a car mechanic wants to know which of two engine brands makes better-performing engines. he wants to test the engines in identical situations and rate their performance in a way that can be fairly measured. a chemist studies the properties of a metal compound. she wants to know how the sample size of the metal affects its ability to conduct electricity. she wants to conduct the research in a controlled environment to minimize bias. a realty company wants to know the average income of its clients. the company wants to gather data income from current clients.