Ineed to make a 3d model of a cycle but i don't want to do the water cycle, some ideas

The lower respiratory system includes the a. lungs. b. esophogus. c. larynx. d. pharynx

Send sperm live for about 48 hours after ejaculation and ovum for only 24 hours after ovulation intercourse can occur after ovulation for fertilization to occur

Write an essay of no less than 200 words on health behaviors, risk factors, and prevention of coronary artery disease (cad) through exercise.