Howard is making a class presentation about the process of abrasion and he wants to model the process. Which of these can Howard do to model the
process of abrasion?

A. Pour water over a pile of sand

B. Rub a soft rock on a rough surface

C. Put flat iron fillings in a beaker of water

D. Place a Few small drops of acid on a rock.

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.

digestion

it excretes wastes

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.