15.2 11. Of the following, which organisms penetrate soil and cracks in rocks or rotting organic materials?
A. Insects C. Bacteria
B. Animals D. Plants

12. Of the following, which organisms move soil around and create small holes for drainage and aeration?
A. Insects C. Bacteria
B. Animals D. Plants

11.d

12.a

Explanation:

ccd puts the honeybee populations and crop health at risk.

the above detail from paragraph 2 supports the inference about honeybee.

invention of the washing machine

in the past, people used sticks and stones or scrub boards to clean their clothing. as it was sweaty, backbreaking work, we owe a world of to james king because he created the model for the modern washing machine in 1851. the most important issue was that this machine cleaned clothes while a person cranked the handle. doing this made people who used it develop strong muscles in their arms. later, in 1908, alva j. fisher created an electric washing machine named thor. this one was not the first automatic washing machine. however, it was one of the most popular models at the time.