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Answer: Measurement of the amount of waste produced.

Explanation:

Measurement of the amount of waste produced is the independent variable for a controlled experiment in this case. Therefore, the correct statement is option B.

The independent variable is the variable that can be changed in a controlled experiment. In this case, the researcher can manipulate the amount of waste produced followed by observation of its effect on the ecological footprint.

The researcher can manipulate the amount of waste by changing the factors such as the type of waste produced, recycling facilities available, etc. under controlled conditions.

Once the independent variable is manipulated, the researcher can observe its effect on the dependent variable. In this case, the ecological footprint of the individual is a dependent variable. The dependent variable is the variable that can be affected by the independent variable and is measurable.

Therefore, the measurement of the amount of waste produced is the independent variable for a controlled experiment.

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Answer:

Primacy Producers----- Oak tree , primary consumers------ Caterpillars , secondary consumers ------- blue jays, and tertiary consumers ----- hawk.

Explanation:

Oak tree refers to the primacy Producers in this pyramid because it produces food by using the solar energy. Caterpillars are primary consumers that feeds on the producers and also known as herbivores, blue jays are the secondary consumers that feeds on the primary consumer which is the caterpillar, and tertiary consumers are the hawk that feeds on the secondary consumer i.e. blue jays. In this way, energy flows in the food chain of an ecosystem. During this flow of energy, only 10% of energy is transferred from one trophic level to another while the remaining releases in the environment in the form of heat energy.

Explanation:

Plants produce two gaseous waste products i.e. oxygen during photosynthesis and carbon dioxide during respiration. Excretion of gaseous waste in plants takes place through stomatal pores on leaves. ... Excess of water is also excreted from the plant body through the stomatal pores and from the surfaces of fruits and stems.

Answer:

If the average temperatures of temperate forests fell by about 25ºC during the period of 1500 years, the natural modification of the animals that would be favored would be that which allows an adaptation to the new climatic circumstances by the fauna of said forests, that is , to the notable drop in temperature. Thus, for example, animals would develop more voluminous furs, which would allow them to heat their bodies in a better way.

Answer:

D. nucleotides

i'm not sure

Answer:

B. chloroplast, oxygen

Explanation:

This is because plants take in the carbon, water, air,and it transforms the water into oxygen and carbon into glucose. So it absorbs light, and the chloroplasts are special structures that are responsible for that absorption of light, They are green, because of chlorophyll, which gives the green pigment to leafs

photosynthesis takes place inside them, so they can absorb light to start the process.

Answer:

Incomplete dominance

Explanation:

- Eijiro <3

Answer:

incorrect.

Explanation:

there is a possibility. but in reality color does not effect the foal.

My Friesians grandfather was an Akhal teke that was gold. He gave birth to all black offspring as you can see in the attachment.

Answer:

C. Granular material called chromatin

Answer:

Heat decrease the thermal energy of an object as energy moves to the air. Heat causes the thermal energy of the object to increase as energy moves from warmer air to the colder object

I dont know what is the answer sorry!

Answer:

Due to over-pumping of water.

Explanation:

The aquifer around the Los Angeles are in California could be susceptible to an impact by a Tragedy of the Commons because the people used more water than the aquifer receives. The excess use of water from the aquifer through the well causes depletion of water which results in the shortage of water to fulfill the needs of existing population so it is wise to use water efficiently and used lower or equal water the aquifer receives in order to maintain level of aquifer.

Answer:

The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.

Answer: One molecule of glucose (C6H12O6) and six molecules of oxygen (O2)

Explanation:

Six molecules of carbon dioxide (CO2) combine with six molecules of water (H2O) in the presence of light energy. This produces one molecule of glucose (C6H12O6) and six molecules of oxygen (O2)

Answer:

ANNYEONG HASEYO JONEON BANGTANSONYEONDAN HOGEON MAKNAE JEON JUNGKOOK IMNIDA

Answer:

Hollow bones is the correct answer.

Explanation:

As hollow bones makes the density of bird less than air that's why birds can fly easily

Answer:

hollow bones

Explanation:

Answer: 16 mm

Explanation:

If I understood the given equation correctly, it could be rewritten as:

size of image = size of real object * magnification

Plug in the given values, and we get

size of image = 0.8 * 20 = 16 (mm)

Answer:

Chloroplasts are found in plant cells only because chloroplasts contain chlorophyll which is essential for photosynthesis. Chlorophyll traps sunlight and uses it to prepare food for plants by the process of photosynthesis.

Answer:

Gg x Gg

Explanation:

Gg x Gg crosses would be expected to produce the greatest variety of genotypes among the offspring.

A Punnett square is defined as a graphical representation of the possible genotypes of the offspring resulting from a particular cross or breeding event. Creating a Punnett square requires knowledge of the genetic makeup of the parents.

For a monohybrid cross, Punnett squares are 2X2 squares containing four boxes where each represents a fertilization event between the original gametes. While the second type is used to predict the outcome of breeding experiments where two traits are being observed and the Punnett square is large with sixteen boxes.

In the above example, if a Gg x Gg cross occurs, the genotype for the children will be Gg, which would be expected to produce the greatest diversity of genotypes among the offspring, i.e. 100%.

Thus, Gg x Gg crosses would be expected to produce the greatest variety of genotypes among the offspring.

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Answer:

darker and lighter

Explanation:

Hope it helps :)

A plant grown in low light will have darker flower color while a plant grown in bright light will have lighter flower color.

The plants which have the ability to survive in the high intensity of sunlight they are called heliophytes.  

Prosopis, Betula, Teak, etc are the examples of heliophytes.The plants which grow in low light intensities are called Sciophytes. Example includes Aegle, Nycanthes.

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Answer:

if the nucleotide insertion occurs within the coding region of a gene (frameshift mutation), then it will change the open reading frame (ORF) of the resulting protein and thus also will alter the phenotype of the individual  

Explanation:

A mutation is any change in the DNA sequence of the genome of a cell/organism. A point mutation is a genetic mutation where a single nucleotide is inserted, deleted or changed from the original DNA sequence. The insertion of a single nucleotide in the coding region of a gene is called frameshift mutation since this nucleotide base shifts the way the DNA sequence is read. A frameshift mutation changes the meaning of the codons that follow the inserted nucleotide base and thereby protein function is generally lost, thereby also affecting the resulting phenotype associated with this protein.

Answer:

The stable, end stage of ecological succession in which the plants and animals of a community use resources efficiently and balance is maintained by disturbances such as fire. The ultimate goal of ecological succession. After a natural disaster and continues until a climax community is reached.

Explanation:

The ultimate role of ecological succession in an environment is to reach the equilibrium in an ecosystem.

This event involve in the steady and gradual change in a species of a given area with respect to the changing environment is called as ecological succession.

The changes are inevitable process where all biotic components of the ecosystem keep up with the changes in our environment.

This process ultimately reach equilibrium in the ecosystem and the community that achieves this referred as a climax community, where some species increase in number and others decrease.

The communities that undergo changes sequentially in an area is called sere, so it is also called as seral stage or seral community.

Evolution has taken place simultaneously with that of ecological succession, so all the communities we observe are the result of ecological succession.

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According to the study, if the boy drinks one liter of soda per day then, he will drink 28 soda cans of 250mL volume in a week (seven days). Each day, he drink four cans of 250mL.

A soft drink is a drink which usually contains water, artificial sweeteners, and a natural or artificial flavoring agent. The sweetener used in the soda drink can be a sugar, high-fructose corn syrup, fruit juice, a sugar substitute, or combination of these compounds. They may also contain caffeine, coloring, preservatives, and other ingredients.

If a boy drinks 1 liter of soda per day. Then, the number of cans of 250mL soda he drinks in a day will be:

1 liter = 1000mL

Number of cans which a boy drinks in a day = 1000mL/ 250mL

Number of cans of soda = 4

The number of cans which a boy drink in a week i.e., 7 days = Number of cans which a boy drink in a day × number of days in a week

Therefore, the number of cans which a boy drink in a week = 4 × 7

The number of cans of soda = 28

Therefore, the boy drinks 28 cans of soda in a week.

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Answer:  In general, the surface temperatures decreases with increasing distance from the sun. Venus is an exception because its dense atmosphere acts as a greenhouse and heats the surface to above the melting point of lead, about 880 degrees Fahrenheit (471 degrees Celsius)

Explanation:

I Hope This Helps You! Have a Great day! ^v^

Answer:

The missing options are:

A. Spindle fibers have not correctly attached to chromosomes.

B. Damage occurred to DNA when it was being copied in G1.

C. There are not enough nucleotides available to construct new DNA.

D. Proteins necessary for M phase of the cell cycle have not been produced.

The correct option is C.There are not enough nucleotides available to construct new DNA.

Explanation:

During the G1 phase, the cell grows in size since it prepares its organelles and molecule combinations for the next phase of the cell cycle, the S phase. Before the cell transitions to the S phase, it has to pass through a checkpoint that makes sure that there are no mutations, it has grown enough, and has the necessary molecules for the next phase, which is the synthesis of DNA. If there are not enough nucleotides, the cell will not be able to synthesize new DNA in the S phase, so the checkpoint stops the cells from moving to this phase till it has all the necessary things to do it.

Answer:

a. 0.5 grams b. 0.25

Explanation:

Just use the half-life formula(I linked it below)

a. 4(1/2)^90/30=1/2

b. 4(1/2)^120/30=1/4

A. 0.5 grams is left unchanged after 90 days.

B. 0.25 grams is left unchanged after 120 days.

The half-life of a radioactive isotope is defined as the time it takes for half of the radioactive isotope to decay. It is stable in specific radioactive isotopes. It is unaffected by circumstances. It is also independent of the initial amount of that isotope.

It can be find out by this formula:-

[tex]N=N_o (1/2)^n\\\\[/tex]

where, N=  quantity of the substance remaining

[tex]N_o[/tex]= initial quantity of the substance

n= number of half lives

For above given example,

Given that radioactive element X has a half-life 30 days

Hence the number (n) of half-lives in 90 days

n=90/30

n=3

The amount N of radioactive element X left after n=3 half-lives with initial amount [tex]N_o[/tex]=4 gm

[tex]N=N_o (1/2)^n\\\\\\N= 4 (1/2)^3\\N= 4(1/8)\\N= 0.5 gms\\\\\\[/tex]

For 120 days, n=120/30

so, n= 4

Then,

[tex]N=4(1/2)^4\\N=4(1/16)\\N=0.25 gms[/tex]

Thus, A. 0.5 grams is left unchanged after 90 days.

B. 0.25 grams is left unchanged after 120 days.

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