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Vikki [24]
2 years ago
7

A forensic scientist wants to reveal hidden writings or alterations in a document. Which technique should he use?

Biology
2 answers:
marusya05 [52]2 years ago
8 0

Answer: ultraviolet or infrared imaging

Explanation:

The forensic document examination involves the decipherment of secret writings written on the document also some of the alteration in the original document done by using invisible chemical solutions. These writings and alterations can be revealed by the ultraviolet or infrared imaging techniques.  The material used in the ink of secret writing and the chemical solution can absorb the radiations from UV and infrared rays which emits their own light with particular wavelength along with the writing part which can be detected by using suitable devices.

timama [110]2 years ago
6 0

Answer:

ultraviolet or infrared imaging- when you hold a paper up to light it may reveal  somthing that was'ent there if you wrote it in lemon juice. In a similar way, forsencic scientists use UV lights to reveal any alteration or hidden writings on a piece of paper.

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At what pH levels are enzymes in the human body productive?
fredd [130]

Answer:

Between ph7 and ph 11

Explanation:

The optimum pH level for this is at pH7 because the number achieved was 350 product molecules per Minute

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1 year ago
What's the primary reason that mammals and avian dinosaurs thrived in the Paleogene period? A. Plants developed as the main food
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Answer:

I think that it might be A

Explanation:

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1 year ago
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Which of these can happen to objects in the solar system that do not have the momentum to maintain a stable orbit around the sun
jeka57 [31]

Answer:

do you have the rest of the answers? i really need them.

Explanation:

5 0
2 years ago
Match the following vocabulary words. 1.ciliary musclesA transparent liquid which is located between the cornea and iris. 2.opti
klio [65]

Answer:

1. Aqueous humor.

2. Ciliary muscles.

3. Cone.

4. Cornea.

5. Iris.

6. Optic nerve.

7. Photoreceptor.

8. Retina.

9. Rod.

10. Sclera.

11. Vitreous humor.

Explanation:

A sensory system can be defined as components of the central nervous system (CNS) which comprises of the brain, neural tissues or pathways and sensory neurons responsible for sensory functions, perception and processing sensory informations such as sound, light, heat, etc.

Basically, the central nervous system (CNS) interprete the neural signals that are generated from stimuli that are detected by the sensory system. The five (5) main sense organs in the sensory system are: skin, tongue, ears, nose and the eyes.

An eye can be defined as a specialized organ of sight with the capability to receive visual images that are subsequently transduced into neural signals and relayed to the brain for processing and interpretation. Some of the components of the human eye matched with their description are;

1. Aqueous humor: a transparent liquid which is located between the cornea and iris.

2. Ciliary muscles: muscles attached to the lens to change its shape.

3. Cone: a photoreceptor cell which functions best in bright light. It detects color.

4. Cornea: the transparent portion of the sclera at the front of the eye.

5. Iris: a special part of the choroid layer composed of colorful tissue.

6. Optic nerve: the nerve connecting the eye to the brain.

7. Photoreceptor: specialized cells located in the retina that receive light images.

8. Retina: a delicate light-sensitive membrane covering the inside of the eyeball.

9. Rod: a photoreceptor cell which is sensitive to dim light, but detects no color.

10. Sclera: a fibrous material surrounding the eye to give it shape.

11. Vitreous humor: a transparent jellylike substance filling the eyeball.

8 0
1 year ago
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Three small bones connect the tympanic membrane to the oval window. what is the function of these bones??
lesantik [10]
The bones are: malleus (hammer-shaped) , incus (anvil-shaped) and stapes (stirrup-shaped).

They are together known as ear ossicles.

They transmit the vibrations from the eardrum or tympanum to the inner ear.
4 0
1 year ago
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