Given a scientific passage and an answer, generate a question for the given answer.

Passage: Horner's syndrome is a condition that presents with changes in one eye, such as pupillary constriction and dropping of eyelids, as well as decreased sweating in the face. Why could a tumor in the thoracic cavity have an effect on these autonomic functions? 32. The cardiovascular center is responsible for regulating the heart and blood vessels through homeostatic mechanisms. What tone does each component of the cardiovascular system have? What connections does the cardiovascular center invoke to keep these two systems in their resting tone? 33. Why does smoking increase the risk of heart disease? Provide two reasons based on autonomic function. Why might topical, cosmetic application of atropine or scopolamine from the belladonna plant not cause fatal poisoning, as would occur with ingestion of the plant?. Answer: one eye
Which part of the body shows does horner's syndrome affect?

Passage: Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms. Answer: chemistry
What branch of science is based on the modern atomic theory, which states that all matter is composed of atoms?

Passage: Amino acids are the "building blocks" of proteins. There are 20 different common amino acids. The structural formula of the simplest amino acid, called glycine, is shown in Figure below . Other amino acids have a similar structure. The sequence of amino acids and the number of amino acid chains in a protein determine the protein's shape. The shape of a protein, in turn, determines its function. Shapes may be very complex. You can learn more about the structure of proteins at the URL below. Answer: amino acids
What are the "building blocks" of proteins?