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Zarrin [17]
3 years ago
9

What can dried blood tell an expert?

Biology
2 answers:
siniylev [52]3 years ago
4 0
Blood dries over time. How quickly this happens depends on the surface on which the blood landed, how much blood the spatter contains, and the heat and humidity at the crime scene, but as a rule the outer edges of the stain dry first. Consequently, after the interior portion flakes off or is smeared by an object, a dry blood spatter can skeletonize, that is, leave behind a ring similar in appearance (if not color) to a water ring on a coffee table. Patterns of drying help analysts determine how long an assault went on, detect whether it took place all at once or in stages, and nail down possible crime scene contamination. Clotting patterns in blood provide similar information and can help nail down the time factor if analysts arrive at the scene before blood can dry. Clotting begins within 3 to 15 minutes, but actual times vary by amount, surface type and environment. Mixed levels of clotting can indicate that multiple blows or gunshots occurred over time
attashe74 [19]3 years ago
3 0

Answer:

Making a dry blood test can diagnose hepatitis C

Dry blood samples can detect both antibodies and hepatitis virus RNA successfully. It involves obtaining a few drops of blood by fingerprinting, and letting them dry on a specially specific absorbent paper card.

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HURRY!! How does topsoil keep pollution out of our aquifers?
mars1129 [50]

Answer: it acts as a water filter as groundwater moves through it

Explanation:

Soil is a medium in which life is sustained through plant growth, the recycling of matter and nutrients, and the purification and cycling of water. Soil can act as a sponge to purify water, and thus plays a role in water quality.

7 0
2 years ago
Which person would need more body fat than the others? a. A pregnant woman b. A high school basketball player c. A professional
-Dominant- [34]

Answer:

The correct answer is: A) a pregnant woman.

Explanation:

Bodybuilders in particular need the lower body fat percentage possible in order to succeed in their career, since most of their bodies must be muscle. Professional ballet dancers need to be light and skinny to be able to perform their dance moves and to be lifted by their partners; a basketball player also needs a lower fat percentage and a higher muscle mass percentage to be able to play at his best; and a ranch hand as well needs to not be packing that much fat in order to make his job easier.

Pregnant women, however, need body fat to have healthy pregnancies. This doesn't mean that they do not need to take care of themselves, because a higher body fat than what it's needed can lead to diabetes, high blood pressure and can difficult the pregnancy.

8 0
2 years ago
What stage of developement are mountain streams in
kodGreya [7K]
The mature stage. I hope this was helpful.
7 0
3 years ago
Read 2 more answers
When pollen moves from the stamen of a flower on one plant to the pistil of the flower of a different plant this is called what?
Ainat [17]

Answer:

Its pollination

Explanation: The process by which pollen is delivered to the ovule of a gymnosperm or the stigma of an angiosperm. And a pollinator is an organism or other agents such as wind or water that transfers pollen from one plant to another; most commonly applied to organisms. hope this helps!

8 0
2 years ago
The process of DNA replication occurs just before ______________.
bazaltina [42]
I believe your answer would be "Cell division"
DNA replication occurs just before the process of cell division which is also known as mitosis.

Mitosis is when the cell is being divided into two and this is when DNA starts to replicate and it produces more cells and the process goes on and on and no. 

Hope this helps. c:
3 0
3 years ago
Read 2 more answers
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