A(n) blank is a pure substance that can't be broken down into simpler substance by chemical or physical means

What is the purpose of the outer ear? a. to convert mechanical waves into electrical waves b. to evaluate the quality of sound c. to convert sound waves into mechanical waves d. to collect and focus sound waves

Write a 5-paragraph informative essay on a prominent latino / latino-american, of your choosing, who has made an impact. decide which prominent latino / latino-american you would like to write about. this person can be living or deceased. for example: frida kahlo, a mexican surrealist painter. how did she impact society and/or the industry? discussion question: in one paragraph, explain why you chose that individual to write about. what about this person interests you? what do you hope to learn about them?

Choose the inventions of the baroque era. eyeglasses mercury barometer harvester microscope pressure cooker printing press slide rule