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Kisachek [45]
3 years ago
12

The cardiovascular system is also known as the

Biology
1 answer:
ELEN [110]3 years ago
6 0

Answer: circulatory system

Explanation:

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How has the use of pcr improved modern dna forensic science?
mestny [16]
PCR (polymerase chain reaction) is a relatively new advance (1980's) but it has a great impact in our lives. Specifically, in forensic science, PCR is useful in many sorts of crimes . Up until the PCR method, in order to identify a person forensic scientists would use fingerprints or some other ambiguous methods like teeth marks etc. But now, with PCR, we can compare the genetic material found on a crime scene and compare it with a suspect's genetic material, definitively concluding whether they are the same person or not. The way this works is that we collect a sample from the crime scene with DNA and then PCR amplifies the quantity of DNA in that sample. One of the apparent advantages of this method is that PCR works with even a very small sample, often not even a single cell is required. This makes crime scenes full of information. Hence, succinctly, PCR has helped modern forensic science in that:
1) its results are more definitve than traditional identification methods and subject to less ambiguity
2) it is relatively fast
3) new pieces of evidence can be of value (like some hair cells) and identify the crominal in cases that in older times would be impossible to solve.
8 0
3 years ago
Why do you want to read research by scientists who use the scientific method? Select all that apply.
Bezzdna [24]

Answer: I believe it is C. and D.

8 0
3 years ago
Reactions that require CO₂ take place in ________.
Alex787 [66]

Answer:

The correct answer is: A) the Calvin Cycle alone.

Explanation:

These reactions happen in cells capable of photosynthesis.

The only out of these reactions that require CO2 to take place is the Calvin Cycle. The Calvin Cycle is a series of biochemical processes that occur in the chloroplasts during photosynthesis. <u>The Calvin Cycle uses carbon dioxide (CO2) and water to produce glucose</u>, which will give energy to the cells.

The light reactions occur during photosynthesis in the presence of light and involving photophosphorylation. The light reaction does not make use of CO2, as it takes solar energy and converts it into NADPH and ATP.

7 0
3 years ago
How do human activities affect the global ocean?
nadya68 [22]

Answer:

positive affects and negative

Explanation:

Habitat Destruction. Virtually all Ocean habitats have been affected in some way via drilling or mining, dredging for aggregates for concrete and other building materials, destructive anchoring, removal of corals and land “reclamation”.

3 0
2 years ago
.
tigry1 [53]
To provide energy to the body.
7 0
3 years ago
Read 2 more answers
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