The prominent bony ridge that you can palpate across the posterior surface of the scapula is the

"The prominent bony ridge that you can palpate across the posterior surface of the scapula is the scapular spine".

Explanation:

A scapula is a plane and triangular bone located in the superior and posterior part of the thorax. The posterior face of the bone is divided into the supra-spiny fossa and infra-spiny fossa. These two areas are divided by the scapular spine. This is a bony formation that goes from medial to the lateral side of the scapula and finishes in one of the extremes as a bulky prominence called acromion.

The spine is easily palpable through the skin.  

multiplying and dividing the two decimals and the eqations by the same number of the overalls

1: most common garden plants prefer loam — soils with a balance of different-sized mineral particles (approximately 40% sand, 40% silt, and 20% clay) with ample organic matter and pore space. however, some plants grow better in sandy soils, while others are well-adapted to clay soils.

2: available water capacity is the maximum amount of plant available water a soil can provide. it is an indicator of a soil's ability to retain water and make it sufficiently available for plant use. available water capacity is the water held in soil between its field capacity and permanent wilting point.

3: it is the same for all living things (plants and animals). it also includes very tiny organisms that our eyes cannot see. they are known as microorganisms, and include viruses, bacteria and fungi.