the answer is D. All of the above
Salt in the ocean comes from rocks on the land ...the rain that falls on the land contains some dissolved carbon dioxide from the surrounding air
Answer:
The first objective lens that someone should first use to view a slide is the 4x magnification objective lens.
Explanation:
- This is because the 4x magnification objective lens has got the lowest magnification power.
- This in turn means that it has the highest field of view.
- This in turn makes it easier to locate the specimen first before switching to lenses with higher magnification power for focus after finding the location of the specimen.
Answer:
B. A precipitin test is the correct answer
Explanation:
To determine whether a bloodstain is of human or animal origin, the serologist will perform: A precipitin test.
The precipitin test is based on the interaction between antigen and antibody which results in the formation of antigen-antibody complexes and this visible precipitate antigen-antibody complexes is called precipitin.
Precipitin test is a serological test where antibody reacts with soluble antigen to produce a precipitate.
The precipitin test is used to distinguished whether the blood sample is from human or different sources.
