Why boric acid considered as a weak acid

Shanti wraps the gift she is taking to a friend's birthday party. she doesn't have very much paper, so she does not overlap any of the edges. how much paper did it take to cover the gift?

Which of the following statements best characterizes changes to agriculture in the united states since 1900? a. increased mechanization has reduced the need for labor. b. increased mechanization has increased the need for water, thereby increasing the need for labor. increased mechanization has increased the use of land, thereby increasing the need for labor. d. increased mechanization has increased food production, thereby increasing the need for labor. select the best answer from the choices provided.

Look at the photo i can’t do geography