One student filled two clean jars with hot water. Baking soda was added to water in both the Jars and stirred until no more baking soda dissolved in the water. Small
weights were tied to two ends of a thread and the ends were dipped into the two jars as shown below.

After two or three weeks the student observed a white solid material growing down from the middle of the thread between the two jars. The student's experiment demonstrates
that
A) Wmen water evaporates, it leaves solid minerals behind
B) When water is left undisturbed, it turns into solid minerals
C) when water reacts with baking soda, it freezes into solid minerals
D) When baking soda reacts with water, it converts gases into minerals

Answer:The competitive exclusion principle says that two species can't coexist if they occupy exactly the same niche (competing for identical resources). Two species whose niches overlap may evolve by natural selection to have more distinct niches, resulting in resource partitioning.

Explanation:hope this helps happy hallowen

The distinct characteristics of different cell types in a multicellular organism are produced mainly by the differential regulation of the genes.

Genes are responsible for the synthesis of protein molecules in the cell.

All the cells of a living organisms contain the same sequence of genes, however, they differ in the way they are expressed.

This makes cells exhibit different characteristics in the same living organism.

Therefore, the distinct characteristics of different cell types in a multicellular organism are produced mainly by the differential regulation of the genes.

Learn more about gene expression at: https://brainly.com/question/3533860

Answer:

130 s or 2 min and 10 sec

Explanation:

[tex]x \: = vt[/tex]

260 = 2t

t = 130 sec

Answer:

2 min 10 s

Explanation:

Simply use unitary method.

Spiderman flies 2km in 1s.

For 1km, its 1/2 s.

For 260 km, it takes 1/2 *260 s

=130 s

Answer:

-TheUnknownScientist 72

Answer:

Photoheterotroph

Answer:

A mutation during protein synthesis may not affect the protein since the mutation causes a new code for the same amino acid, the protein will still function normally.

Explanation:

Protein synthesis depends on the transcription of DNA to RNA, and on the sequence of nucleotides in the chain, determining the triplets or codons that encode a specific amino acid.

In protein synthesis, when a mutation alters the codon, changing one nucleotide for another, it is possible that the mutation does not alter the amino acid and the protein functions correctly. This is because an amino acid can be encoded by several codons, as occurs with leucine, which is encoded by CUU, CUC, CUA and CUG.

    The other options are not correct because one mutation does not give better amino acids or more powerful proteins.

Answer:

hope this helps you!!!!!

Answer:

Platelets

Explanation:

Platelets in the blood help clot the blood to start the process of healing a wound.

Answer:

Explanation:

Answer:

At higher temperatures, more collisions occur so the rate of reaction increases. However, extremely high temperatures disrupt the shape of the active site, which will reduce itsactivity, or prevent it from working. Theenzyme is now denatured . Enzymestherefore work best at their optimum temperature.

Answer:

We suggest the existence of a correlation between the planetary radius and orbital period for planets with radii smaller than 4 R⊕. Using the Kepler data, we find a correlation coefficient of 0.5120, and suggest that the correlation is not caused solely by survey incompleteness.

Explanation:

Answer:

Organs and Organ Systems. After tissues, organs are the next level of organization of the human body. An organ is a structure that consists of two or more types of tissues that work together to do the same job. Examples of human organs include the brain, heart, lungs, skin, and kidneys.

Explanation:

Levels of organization helps us (people) to classify the different types of interactions that occur in the environment

Answer:

A is the correct answer

Answer:

A

Explanation:

hope this helps. .................

Answer:

a light reaction needs sunlight to begin

Answer:

One of the two things that could bring its population back down is lack of food, This is because due too the boom of the rabbit population their food sources will be eaten at a much faster rate until it overtime runs out. Another one is more predators, because of more rabbits more predators will be drawn too the area and help with population control by eating/killing them.

Explanation:

Answer:

Seawater is toxic to humans because your body is unable to get rid of the salt that comes from seawater. Your body normally gets rid of excess salt by having the kidneys produce urine, but it needs freshwater to dilute the salt in your body for the kidneys to work properly.

Answer:

The salt water will make you go lose your mind,and it will dehydrate you.

DNA is directly inherited from an organism's parents, via their gametes, which are produced by the process of Gametogenesis. Thus, if a person has phenylketonuria, they have inherited genetic information that has lead to the production of a dysfunctional protein, specifically a(n) enzyme that normally breaks down phenylalanine.

Phenylketonuria is a rare genetic disease characterized by the presence of a mutation responsible for altering the function of an enzyme in the body responsible for converting the amino acid phenylalanine into tyrosine, which leads to the accumulation of phenylalanine in the blood, which in large concentrations is toxic to the human body.

With this information, we can conclude that DNA is inherited directly from the parents of an organism, through its gametes, which are produced by the process of Gametogenesis. So, if a person has phenylketonuria, they have inherited genetic information that led to the production of a dysfunctional protein, specifically an enzyme (n) that normally breaks down phenylalanine.

Learn more about DNA in brainly.com/question/264225

Uranium-238 decays very slowly with a half life of 4.5 billion years. what percentage of a sample of uranium-238 would remain after 13.5 billion years?

The mass of Uranium halves every 4.5 billion years, so 13.5 billion years= 3 half-lives.

[tex]M=M_{0}[/tex] × [tex](\frac{1}{2} )^n[/tex]

Is the equation that describes the decay, where [tex]M^0[/tex] is the initial mass and [tex]n[/tex]   is the number of half-lives passed.

So if 3 half-lives have passed:

[tex]M=M_{0}[/tex] × [tex](\frac{1}{2} )^3[/tex]

[tex]M=M_{0}[/tex] × [tex](\frac{1}{8} )[/tex]

[tex]M= \frac{1}{8} M_{0}[/tex]

So there will be 1/8 of the original mass left after 13.5 billion years, or 12.5% of the mass left.

Answer:

It is a system for conducting a scientific investigation

Explanation:

When wondering why something happens it first starts out with a question and then it becomes a scientific investigation so that's why it is a system or way of conducting a scientific investigation. Continue reading furthur for more info.

It is also a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.

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Answer:

La respuesta correcta es: "El orden de rapidez en el sube la glucemia es el siguiente: (B) una ración de glucosa, (C) una ración de almidón y (A) una ración de celulosa".

Explanation:

La rapidez a la que sube el nivel de glucosa en la sangre depende del alimento que estemos ingiriendo. En este caso, el ingerir una ración de glucosa será lo que aumente el nivel de glucemia más rápidamente dado que no requiere ningún procesamiento digestivo. En segundo lugar será el almidón, el cuál debe ser degradado por la enzima amilasa para tener acceso a la glucosa. En último lugar será la celulosa, dado que no tenemos las enzimas necesarias para digerirla y se requiere la ayuda de microorganismos para hacerlo.

Answer:

CH4

Explanation:

Combining hydrogen and carbon produces a group of organic compounds called hydrocarbons. Depending on the specific molecular formula, there can be many different types of hydrocarbons, such as the fuels propane and octane. The simplest hydrocarbon is methane, which has the chemical formula CH4.

Answer: DNA has a double helix while RNA shouldnt

Answer:

Cytoplasm is composed of specialized structures called cytoplasmic organelles. Cytosol is the liquid matrix of the cytoplasm. The organelle is suspended within this liquid.

Answer:

Dependent variable

Explanation:

The dependent variable in an experiment is the variable that the experimenter measures in an experiment. The dependent variable responds to changes made to the independent variable.

In this case, the pH of a stream is being measured at varying distances. If one is to measure the pH of the part of water above the factory, the pH being measured represents the DEPENDENT VARIABLE in the experiment.

Answer:

any use of electricity in the stadium

Explanation:

Answer: fossil fuels used to get fans to and from the stadium.

Explanation:

Transportation to and from the stadium generates a large amount of carbon dioxide, which remains the responsibility of the fans attending the games.

Answer: B

Explanation:

This breaks down the pyruvic acid to carbon dioxide.

This produces 2 ATP and 6 NADH, for every glucose molecule entering glycolysis. The Krebs cycle takes place inside the mitochondria. The Krebs cycle produces the CO2 that you breathe out.

Answer:

Trees play the part of taking in the carbon dioxide that we breathe out and changing it into oxygen so we can breathe it, they alos provide homes for different types of animals.

Hope this helps!