You have been assigned a classroom task to prepare a short composition packet under the heading "Science and Everyday Living". Along with the composition, your teacher asks for related brief items: examples of inventions, opening and closing lines, and ethical reflections. Use clear, student-friendly language.

a. Write a composition on "Science and Everyday Living" in about 200 words.

b. Name four modern scientific inventions and write one short sentence about the impact of each on daily life.

c. Write one strong opening sentence and one memorable concluding sentence for the composition.

d. Mention two ethical concerns arising from modern science and propose one practical solution for each.