Current functional magnetic resonance imaging (fmri) technology allows researchers to

it allows researchers to measure brain activity

Explanation:

it detects blood flow and and changes  This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood flow to that region also increases.

The FMRI allows doctors to track the flow of blood, useful in detecting obstruction or pathway issues in the brain.

Explanation:

all soils contain mineral particles, organic matter, water and air the combinations determine the soil's properties – its texture, structure, porosity, chemistry and color. soil is made up of different-sized particles. sand particles tend to be the biggest.