a measure of the acidity of soils that is defined as the negative logarithm of proton activity (pH = - log[H +]) solvation spheres: water molecules that are in direct contact with a dissolved ...

This nutrient aids in protein synthesis, photosynthesis and movement of water within plants ... This is a key measure of soil health and structure. Although it’s hard to make immediate changes ...

Vernier Science Education recently launched the Go Direct ® Soil Moisture Sensor to help high school and ... Read more ...