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finlep [7]
3 years ago
13

Shakita wants to know if the pH of an open can of soda changes over time. To test this, she designs an experiment that will invo

lve the following steps.
Open a can of soda and measure the pH.

Allow the open soda can to rest undisturbed on a level countertop at room temperature.

Measure the pH of the open soda can every day at the same time for ten consecutive days.
What is the dependent variable in Shakita's experiment?
Biology
2 answers:
Dmitriy789 [7]3 years ago
5 0
The dependent variable in Shakita's experiment is the difference in pH every day she measures the open soda can.
fgiga [73]3 years ago
4 0

the answer is "the pH of the soda"

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Sally and Harry fall in love. They introduce Sally's identical twin, Emily, to Harry's identical twin, Ken. Soon there is a doub
Lesechka [4]

No their babies won't look alike.

<h3>Explanation:</h3>

Both the couples mentioned here i.e. Sally - Harry and Emily - Ken are both identical twins. So they have similar pairs of genetic setup. This was possible because they developed from same zygote.

But during gametogenesis, crossing over and independent assortment occurs which brings about variation in genetic setup among the offspring. And it's very less probable that same crossing over will occur between the gametes of these couples. So, their offsprings won't look same.

6 0
3 years ago
an igneous rock forms quickly. which characteristics could the rock have? small sand grains. Large mineral crystals. smooth, sha
Shalnov [3]

Igneous rocks are formed by hot melted magma coming from the Earth's core that crystalizes when gets in contact with air. They can be either intrusive or extrusive. B) <em>Large mineral crystals.</em>

<h3>What is the igneous rock?</h3>

These rocks come straight from the interior of the Earth.

A liquid mass of silicate composition comes from the Earth's core. This melted mass comes at an extremely high temperature.

Magma begins to cool and solidify during its ascent to the Earth's surface. It solidifies and crystallizes into igneous rock following the magnetic field orientation.

Thre are two types of igneous rocks

• plutonic rocks ⇒ in areas close to the terrestrial crust ⇒ intrusive

• volcanic rocks ⇒ on the surface ⇒ extrusive

According to this description, the correct option is B. <em>Large mineral </em><em>crystals</em><em>.</em>

You can learn more about Igneous rocks at

brainly.com/question/23555197

#SPJ1

8 0
2 years ago
How much natural gas is used in the United States each year? How does this compare with oil and coal use?
kap26 [50]

Answer:In 2019, the United States consumed about 31.01 trillion cubic feet (Tcf) of natural gas.

Explanation:

3 0
3 years ago
which example of a missense mutation in a protein-encoding gene would most likely be a neutral mutation?
KATRIN_1 [288]

An example of a missense mutation in a protein-encoding gene would most likely be a neutral mutation is option B: replacement of a polar amino acid with another polar amino acid at the protein's surface.

A frequent and well-known example of a missense mutation is the blood condition sickle-cell anemia. Missense mutations exist in the DNA at a single location in sickle-cell anemia patients. A different amino acid is required in this missense mutation, which also alters the overall structure of the protein. Similarly, replacement of a polar amino acid by another polar Ami no acid at the protein's surface is a missense mutation causing change in a single site.

A neutral mutation is one whose fixation is unrelated to natural selection. Therefore, the independence of a mutation's fixation from natural selection can be used to define the selective neutrality of a mutation.

To know more about mutations, refer to the following link:

brainly.com/question/20407521

#SPJ4

Complete question is:

Which example of a missense mutation in a protein-encoding gene would most likely be a neutral mutation?

a) Replacement of a polar amino acid with a nonpolar amino acid at the protein's outer surface

b) Replacement of a polar amino acid with another polar amino acid at the protein's surface

c) Replacement of a polar amino acid with another polar amino acid in the protein's interior

d) Replacement of a polar amino acid with a nonpolar amino acid in the protein's interior

3 0
1 year ago
How are the products represented in the chemical equation for photosynthesis? O2 + 6CO2 C6H12O6 + 6H2O 6CO2 + 6H2O C6H12O6 + 6O2
meriva

Answer:

chemical reaction:-

12H20 + 6CO2 + light =====> C6H12O6 + 6H2O + 6O2

the above reaction shows that if we combine water,carbon dioxide and sunlight ,the resultant products will be glucose ,water and oxygen .

The plant converts the carbon dioxide into energy and oxygen by different steps that include

  1. absorption of light
  2. conversion of NADP into NADPH+
  3. conversion of ADP into ATP
  4. formation of carbohydrates from CO2  !

5 0
3 years ago
Read 2 more answers
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