Which of the following best explains how a scanning electron microscope is used to produce an image of a specimen? (4 points) a
An electron beam strikes the specimen, is absorbed by the specimen, and is used to produce an electrically charged image on a screen.

b
An electron beam passes over the specimen's surface and displaces electrons, which are then focused on a screen to form an image.

c
An electron beam traces an outline of the specimen onto a screen, and reflected electrons are collected to form the rest of the image.

d
An electron beam travels through the specimen, and as it does so it burns an image of the specimen on a screen.

the concept of nucleosome occupancy, which reflects the fraction of cells from the population in which a given region of dna is occupied by a histone octamer

answer: 2

explanation:

yes

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.

a chain link fence because there so tiny even my albino donkey can't get out