Answer:The sliding filament model of muscle contraction, put forward by Hugh Huxley and Jean Hanson in 1954, is 60 years old in 2014. Formulation of the model and subsequent proof was driven by the pioneering work of Hugh Huxley (1924–2013).
Explanation:
I think it is D. Ask the doctor what the writing says. If that's wrong, then it's C.
In it they stated that the United States Constitution would grant a competent person a constitutionally protected right to refuse<span> life-saving </span>medical treatment<span> Whether for financial, spiritual or religious reasons, a </span>patient has<span> the ultimate say over what is done to his or her body.</span>
Https://www.google.com/aclk?sa=l&ai=DChcSEwif5aX3movTAhVGgbMKHbDYAVsYABAMGgJxbg&sig=AOD64_0VL-yi-lY6...=
The correct answer is this one: "human industrialization." Air pollution comes from human industrialization. Because of too much industrialization, there are a lot of excess and wastes in any form: air or even liquid and solid wastes.