Cellular respiration is
a spontaneous reaction that assembles smaller molecules into bigger molecules.
a spontaneous reaction that breaks down larger molecules into smaller molecules.
a nonspontaneous reaction that assembles smaller molecules into bigger molecules.
a nonspontaneous reaction that breaks down larger molecules into smaller molecules.

to translate the last persons comment: a nonspontaneous reaction that breaks down larger molecules into smaller molecules

Explanation:

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.

a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects