Answer: Biological
Explanation:
Biological causes of depression could be described as biological or chemical substances that could affect the hormones or brain of individuals which could lead to depression. This could be accessible through inhaling of chemicals in toxic manufacturing environment. Many people who works in some of this environment are affected psychologically which now reflects on their behaviour, some are usually aware of this and some aren't, some who are aware change jobs with time. It could be described that this is what Calvin is going through.
Answer:
The oblique illumination is
used by the microscopists to resolve N. Spencrii in the Dark Field Condensers.
Explanation:
It was found that the use of oblique light was required to resolve the striae. Oblique illumination was the first step toward dark field microscopy. In dark field, light
seems to radiate from the specimen while all the rest of the field is black. Resolution is as good as that in bright field while contrast is enhanced.
In dark field microscopy, no
direct light from the condenser enters the objective lens. Only light
that is reflected, refracted or diffracted by the specimen enters the objective. The dark field condenser produces a circle of light. The
light is at an extremely oblique angle to the surface of the slide. This
oblique light comes to a focus on the specimen. It then diverges so
strongly that no direct light enters the objective. This type
of illumination is a hollow cone of light.
your answer is the one you clicked on lol C
