When's frank's wife was diagnosed with breast cancer, rather than deal with his feelings, he searched countless hours on the internet and in the library for the latest treatments and advances. this is an example of: ?

Worry and how much he cares. Feelings aside, he was worried about the breast cancer and how it would affect her and himself.

The changes to agriculture in the united states since 1900 is that increased mechanization has increased food production, thereby increasing the need for labor. there has been an increased need for higher speeds of food production due the fact that the population in the united states continues to rise.