When various sizes of droplets exist within a cloud, the corona becomes distorted and irregular exhibiting patches of pastel shakes of pinks, blue, or green called .a. scintillationb. coronac. iridescenced. halo

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?

Abookcase has a mass of 38 kg and the coefficient of friction between it and the floor is 0.82 what is the maximum force of friction between the bookcase and the floor a 372n b 305n c 412n d 449n