Answer:
This can be achieved by increasing the resolution of the objective lens of the microscope. To achieve this both the objective lens ( with the dirt)and the specimen are immerse in the oil. The type of objective lens used for the immersion is called optical immersion objective
The oil is first applied to the specimen mounted on the microscope stage.Thus by raising the stage to torch objective lens both the lens and the specimen are immerse in oil. The oil Increases the resolution of the objective lens.
Generally the high refractive indices of the oil and water is close. Therefore the oil increase angular range at which the incident light on the lens will be transmitted , and therefore. focus on the specimen. Thus the oil with the objective lens reduces the refraction of light so that as light incident on the specimen the high refractive index of the lens and oil reduces the diffraction of light, and therefore focusing on the specimen increase.
Consequently, by adjusting the focal length , the objective lens at high magnification is able to resolve the dirt on it and the spots on the specimen. That is distinguished between the dirt on it and spots on the specimen as two distinct images rather than one.
Answer:
The Answer is C
Explanation:
When scientists breed cows to produce more milk, this has not occured naturally and thus is not natural selection.
Answer:
The correct answer will be option-C.
Explanation:
The evolution of human species in which one species transformed into another species evolves by a mechanism known as anagenesis.
Anagenesis is the mechanism of evolution which transform one species into a different species within a lineage. This process is slow and takes time to form species, therefore, is also known as gradualism or phyletic transformation.
The<em> Homo sapiens</em> evolved from<em> Homo erectus </em>where<em> Homo sapiens </em>overwrites the ancestral species and caused the species to become extinct.
Thus, Option-C is the correct answer.
Taxonomy is the practice of identifying different organisms, classifying them into categories, and naming them. -Google
Answer:
where ??? i only see isn letter A-D