Answer:
Wear protective clothing that resists physical and chemical hazards when exposure may occur. Lab coats are appropriate for minor chemical splashes and solids contamination, while plastic o
Explanation:
Helped to confirm that environmental changes cannot affect the characteristics of a species.
Chromatography is a laboratory technique for the separation of mixture. It contains two components:
Stationary phase- substance that is fixed inside the column
Mobile phase- substance that is moving through the column.
Analyte is the mixture that has to be separated by chromatography.
When both are added to the column, mobile phase and analyte, components of the analyte will adhere to the stationary phase at different level and as a result travel at different speeds through the stationary phase as the mobile phase flows through it. The components that adhere more strongly to the stationary phase travel more slowly compared to those with a weaker adhesion. So, chromatography separate substances based on their adhesion for stationary phase.
<span>Concentration of cones (photoreceptors)…..optical
nerves. The fovea is responsible for the higher visual acuity 20/20 vision. It
is the region if the retina that is depressed and has little blood vessel
supply to avoid dispersion of light. While it only comprises 1% of the
retina, it makes up 50% of brain’s visual cortex. </span>
Answer:
You use the control group against an experimental group to see if there is a change when you add a variable. Th control group is the group without the variable you are testing.
