How to kill someone using pencil Sharperner's blade​

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these

On a spring day, a middle-latitude city (about 40? north latitude) has a surface (sea-level) temperature of 10 ? c. if vertical soundings reveal a nearly constant environmental lapse rate of 6.5 ? c per kilometer and a temperature at the tropopause of –55 ? c, what is the height of the tropopause?

Consider this microscopic image of bacteria, which bacterial form is shown in the image?