A heterogeneous mixture is made of different materials that can easily be separated.
<u>Answer</u>: Weber's/Weber-Fechner's law of just noticeable difference
This phychologoical law is used to quantify the perception of change for a given stimulus. The perceived change is proportional/constant ratio to the initial stimulus. Thus, it is the minimum amount of a stimulus intensity change that will produce noticeable variation in sensory experience.
As in the example, it has been shown that this law is not function very well for extremes of stimulation.
Earth's lithosphere<span> includes the crust and the uppermost mantle, which constitute the hard and rigid outer layer of the Earth. The </span>lithosphere<span> is subdivided into tectonic plates. ... The </span>lithosphere<span> is underlain by the </span>asthenosphere<span> which is the weaker, hotter, and deeper </span>part<span> of the upper mantle.</span>
microevolution can lead to macroevolution
YES.
The thirst mechanism always underestimates fluid loss during work, in the heat and after work ends. Therefore you should take frequent drinks through out the work period. If you drink 250mililitres every 15 minutes, you can replace one litre per hour. if sweat rate is higher you will find it extremely difficult to keep up with fluid needs. During prolonged periods of work in the heat, weight loss exceeds 2 percent therefore the person should rehydrate before returning to work.