A sample of gold has a mass of 38,6 grams and a volume of 2 cm What is the density of gold?

Maria and her brother like to go fishing at the lake on Saturdays. They wondered if fish were more likely to bite at one time of

kobusy [5.1K]

Answer:

No. They will need to repeat their experiment several times, since the weather and times were different both days.

Explanation:

When a scientific experiment is conducted, one independent variable shall be changed in each experiment at a time so that the results of the experiment are authentic and we can easily determine which independent variable caused a change in the dependent variable.

If more than one independent variable is changed in the same experiment, then it will be difficult to interpret that which variable caused the change.

Similarly, Maria and her brother need to repeat their experiment several times with just changing one variable at a time.

8 0

3 years ago

What is an operon, its function, and in what type of organism are operons found?

Elanso [62]

Am operon is a set of genes transcribed under the control of an operator gene. More specifically, anoperon is a segment of DNA containing adjacent genes. Operons are found in prokaryotes (bacteria and archaea), and (in rare cases) in eukaryotes. Hope this answers the question.

4 0

3 years ago

Plzzzz help Creating models to examine concepts is important in science. Some of these are experiments

Nady [450]

Knowing that a model is considered a representation of something, the correct option is option B, in which the apple represents the Earth. An apple is sectioned into quarters to represent the ratio of water to land on Earth.

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To answer this question, you can think about a model as a representation of something.

A scientific model can represent an object, a system, a process, a phenomenon, etcetera.

Models are used to explain, predict, or describe natural events. They constitute a significant tool in modern science and are essential to scientific practice.

Knowing this, among the provided options, the one that is a model is option B.

The apple is representing the ratio of water to land on Earth. It is a representation of the earth.

All the other options are experiments performed to see what is going to be the result.

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You can learn more about models at

brainly.com/question/14281845

brainly.com/question/19426210

brainly.com/question/1853568

5 0

2 years ago

Geologists were examining an area in Africa called the Great Rift Valley. Which geologic event MOST likely caused the formation

gtnhenbr [62]

Answer:

c. diverging continental plates

Explanation:

6 0

2 years ago

Compare and contrast the two types of cell division, mitosis and meiosis, by

klemol [59]

Answer:

For mitosis:

a) Type of cell produced by division of each cell - Haploid (genetically distinct)

b). Cells before each type of division of cells - Diploid (genetically same or identical).

c). Cells after each type of division of cells - Haploid (genetically distinct)

d). When each division type malfunctions - failed homologous chromosome seperation.

For Meiosis:

a) Type of cell produced by division of each cell - Diploid (genetically same or identical).

b). Cells before each type of division of cells - Diploid (genetically same or identical).

c). Cells after each type of division of cells - Diploid (genetically same or identical).

d). When each division type malfunctions - Non disjunction

failed sister chromatids seperation.

8 0

2 years ago