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valina [46]
3 years ago
5

While performing an experiment at home, Emma adds lemon juice to a soap solution. How will this affect the pH of the soap soluti

on?
A.) The pH will remain constant
B.) The pH will increase
C.) The pH will decrease
Biology
1 answer:
Vinvika [58]3 years ago
6 0
The pH scale goes from 0-14 (0-6.9 = acids and 7.1-8.0 = base and 7.0 = neutral)

Soap is a base and lemon juice is an acid.

If you add a number below 7 (an acid - lemon juice) to a number above 7 (a base - soap) then the pH will begin high and decrease.

C
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Differences in traits are called
Tcecarenko [31]

Answer:

The observable traits expressed by an organism are referred to

EXPLANATION:

An organism's underlying genetic makeup, consisting of both physically visible and non-expressed alleles, is called its genotype. Mendel's hybridization experiments demonstrate the difference between phenotype and genotype.

3 0
2 years ago
A land developer and several ecologists are discussing how a parcel of private land should be developed with housing while savin
FromTheMoon [43]

Options for the question have not been provided. They are as follows:

A) The single intact parcel would have a smaller amount of edge than the 20 separate parcels.

B) The isolated hectare plots increase the ability of individuals to disperse from one habitat to another.

C) The separate 1-hectare plots are less vulnerable to edge effects.

D) The large plot will create more inbreeding in many species.

Answer:

A) The single intact parcel would have a smaller amount of edge than the 20 separate parcels.

Explanation:

In the given case, 20 hectares of land has been allocated to natural habitat. This means that natural flora and fauna will flourish here without any human interference. In this situation it is better to have an intact 20 hectares area at one side of the land, rather than having 20 separately spread out 1 hectare areas. This is because having one large piece of land at one side will reduce the edge effect.

Edges occur where two different habitats meet. While edges can be beneficial when it comes to natural habitats because the boundary habitat increases overall biodiversity, it can be detrimental when the edges are due to human settlements. It will be difficult to avoid human interference as the natural habitats are scattered among human settlements. Each individual plot will also get less area due to which it will be difficult for all the species to accommodate comfortably. Many animals can venture out in search of food which can be dangerous to both animals and humans. It is better to have a big separate land at one corner so that everyone can survive peacefully.

3 0
3 years ago
What happens when a hypothesis is not supported
Temka [501]
<span> For a start, when you have a question that needs answering in science, you formulate a null hypothesis. That is a negative statement which you then set out to prove or disprove. This is just a convention. So if your initial question is for example, "Does sugar dissolve in water?"

Your null hypothesis will be "Sugar does not dissolve in water."
You then set up your experiment and get some data.

Now if your data doesn't support your null hypothesis then you reject it and make the statement ,"Sugar does dissolve in water." As you can see from this simple example, a non-result is still a result so the idea of formulating new tests as mentioned by another answerer isn't necessary and in some ways is the incorrect thing to do. In science, hypotheses are often not supported by data and i would argue that this is the case a lot of the time. A non-result is still a result and you will have plenty to write about whichever way it goes. </span>
5 0
3 years ago
From which hot spot would you view Polaris at an altitude of 45 degrees?
maks197457 [2]

Answer:

Massena, New York

Explanation:

Polaris is most popularly known as the North star. It is also famous by the name of "Pole Star". It is the closet to the north celestial pole. At present it is the northern pole star currently.

It is found in the constellation of Ursa Minor. It is the one of the brightest star seen in the night sky. It is considered the star of the second magnitude which is situated close to the heaven's north pole.

The altitude of the Pole star or the Polaris when an observer is at the Tropic of Cancer is measured at 23.5 degree. While if the observer sees the Pole star at its zenith, the observer is located at the North Pole. i.e. 90 degree.

And the spot from where the observer views the Polaris at 45 degree altitude is Massena, New York.

8 0
3 years ago
What is a cell? How are they different from atoms?
Lapatulllka [165]

Explanation:

Cells are the basic building blocks of all living things. The human body is composed of trillions of cells.

cells are bigger than atoms. We can see cells with a microscope. Just as atoms have smaller parts called protons, neutrons, and electrons, cells have smaller parts, too. When you look at cells with a powerful microscope, you can clearly see hundreds of them.

4 0
3 years ago
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