Astudent weighs a sample of sugar and records the measurement. he then writes down his observations on the appearance of the sugar, describing it as a white, crystalline solid. explain why both of these pieces of information represent the data the student collected.

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.

Atomic nuclei of almost all elements consist of

Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.