What types of organisms show increased complexity of their structure?

Multicellular organisms.

Explanation:

They have many cells all working in unison.

The organisms which show difficulty in their structure are Multicellular organisms.

Explanation:

Organisms that comprise of more than single cell are called multicellular organisms but even ‘single-celled’ organisms are quite complex. Multicellular organisms consists of multiple cells each of which is specialised to perform a particular function. These cells unite to form tissues and then organs like heart, lungs, etc. Each of these organs has a specific function to perform which helps in effective working of the body.

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.