Answer:
in 1860 Florence Nightingale wrote a book cqlled Notes on Nursing which highlighted the importance of hand washing and other means of infection control which did not yet exist as a standard practice.
Explanation:
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Answer:
A number of researchers have tried to detect these correlations in various ways but failed to successfully provide any proper association. Like human beings, the Wistar rats go through the ontogenetic developmental stages «Prenatal → Birth → Infancy → Childhood → Adolescence → Adulthood → Death».
Explanation:
Answer:
Concentration, Temperature, Mass of Particle, Solvent /medium, surface area and permeability properties of membrane.
Explanation:
The random movement of particles causes the phenomenon called diffusion. The concentration gradients of particles pushes molecules in a direction such that molecules move from a region of high concentration to a region of lower concentration.
Diffusion is a passive process (not requiring the input of energy).
The following variables are factors that affects diffusion;
Concentration - down concentration gradient favours diffusion.
Temperature - temperature increases diffusion , the kinetic energy associated with each particle also increases.
Mass/size of Particle - Smaller particles on the other hand will diffuse faster because they can move faster.
Solvent /medium Properties - Viscosity and density of the medium greatly affect diffusion. Highly viscous and dense medium slows down diffusion.
Diffusion can occur through a membrane. The two factors that are particular to diffusion through a membrane are surface area and permeability.
