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inessss [21]
4 years ago
10

A scientist uses materials in her lab to cut a DNA sample into fragments.

Biology
1 answer:
Semmy [17]4 years ago
4 0
I think gel because I once did a lab on gel
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imagine that you are called in to investigate a body that was found in a fire. What evidence would you look for to determine if
otez555 [7]
<span>A body subjected to fire effects can tell the investigator about the fire (and/or explosion), as well as about what occurred before, during, and after the fire. These facts may be crucial to fire origin and cause determination, as well as responsibility and motive in an incendiary fire.Fire injuries and deaths can be related to other crimes, including arson, homicide, and robbery.When investigating a scene, it is not possible to know if, and when, the case may come to civil and/or criminal trial. It may be years before the fire investigator is called to testify, therefore it is imperative to document properly and process evidence properly so the case can be recalled years later and successfully follow the judicial process.<span>More than other fires, fatal fires can create substantial media interest and scrutiny of the investigation by outside parties. The investigative methods and actions must stand up to this scrutiny.</span></span>
3 0
3 years ago
Read 2 more answers
A star produces energy by:
LenaWriter [7]

Answer:C. Creating helium from hydrogen in its core

Explanation: Stars produce energy majorly by nuclear fusion. The process of creating helium by merging hydrogen atoms to produce deuterium which in turn is converted to helium.

5 0
3 years ago
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Dr. Kavanaugh has noticed that many of her students are having difficulties understanding the basic parts of a nerve cell (neuro
wel

Answer:

Hypothesis

Explanation:

Since the problem of the research has been already defined, the next step is to formulate a hypothesis.

This is a clear statement highlighting the main idea or purpose of the scientific research. In this case our hypothesis could be:

The way in which information is presented affects student interest and memory of the material.

8 0
4 years ago
Explain how the work of the following folks contributed to the development of the Theory of Natural Selection
EleoNora [17]

Thomas Malthus was economist who proposed that human populations grow faster than the resources they depend on which becomes limiting factor for them, causing the increase of populations but also increase of famine and diseases. As a consequence, the weakest members die. Darwin linked this with the “survival of the fittest" (naturals elections favors the best suited for reproduction and survival).

Georges Cuvier was anti-evolutionist and religious man, but he did have influence on Darwin theory of evolution (natural selection). He was against linear system of classification so, his believes that there is more than one lineage for species helped Darwin shaped his theory.

Charles Lyell geologists who believed that geologic processes that were at the beginning of time were the same ones that were happening at the current time (processes work the same way through time). He explained that slow changes built up over time, so Darwin linked that with the way that life on Earth changes. (small adaptations that accumulated over long periods of time change a species).

3 0
3 years ago
Below are the pHs of several fluids in the body.
Licemer1 [7]

Answer:

C. blood, cell interior, digestive fluid

Explanation:

least acidic is 7.3 and most acidic is 2

8 0
4 years ago
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