As you move upward, from level, in an energy pyramid, available energy ____.

1. is destroyed

2. decreases

3. stays the same

4. increases

Answers

Answer 1

The available energy decreases as one moves upward in an energy pyramid.

Energy pyramid

The energy pyramid represents a model of how energy is transferred from one trophic level to another in ecosystems.

Energy is transferred from producers to primary consumers, from primary to secondary consumers, from secondary to tertiary consumers, and so on.

Only about 10% of the available energy in one trophic level is transferred to the next with the remaining 90% being lost as heat to the environment.

Thus, as one moves up the energy pyramid, the available energy decreases. This is why organisms at the higher end of the energy pyramid have to devise an efficient way of extracting energy from their foods.

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Related Questions

Different isotopes of the same element emit light at slightly different wavelengths. A wavelength in the emission spectrum of a hydrogen atom is 656.45 nm; for deute- rium, the corresponding wavelength is 656.27 nm. (a) What minimum number of slits is required to resolve these two wavelengths in second order

Answers

Different isotopes of the same element emit light at slightly different wavelengths, the minimum number of slits  is mathematically given as

N=1820slits

What minimum number of slits is required to resolve these two wavelengths in second-order?

Generally, the equation for the wave is mathematically given as

[tex]d\ sin\ (\theta\ m) \ = \ m\ \lambda[/tex]

Where the chromatic resolving power (R) is defined by

[tex]R\ =\ \lambda\ / \ d \ \lambda[/tex]

R = nN,

Therefore

[tex]\lambda_1 \ = \ (656.45)(1 \ * \ 10^{-9})/1mm[/tex]

[tex]\lambda_1= 656.45*10^{-9}[/tex]

and

[tex]\lambda_2= (656.27)(1*10^{-9})/1mm[/tex]

[tex]\\\\\lambda_2= 656.27*10^{-9}m[/tex]

In conclusion, the minimum number of slits is required to resolve these two wavelengths in second-order

[tex]N\ =\ \dfrac{\lambda}{m\ d\ T\ }\\\\[/tex]

Therefore

[tex]N\ =\ \dfrac{656.45 \ * \ 10^{-9}}{2\ * \ (0.18*10^{-9})}[/tex]

N=1820slits

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Water has a ph of 7. if 0.1 ml (about one drop) of 1.0 m hno3 is added to 100 ml of water, the result is a solution with a concentration of 0.001 m hno3. what is the ph of 0.001 m hno3

Answers

1.0 m [tex]HNO_3[/tex] is added to 100 ml of water, the result is a solution with a concentration of 0.001 m [tex]HNO_3[/tex] and the ph of 0.001 M [tex]HNO_3[/tex] is 3

What is  [tex]_PH[/tex] ?

pH historically denoting "potential of hydrogen" (or "power of hydrogen") is a scale used to specify the acidity or basicity of an aqueous solution

GIven ,

[tex]H^{+}[/tex] = [tex]10^{-3}[/tex] M

we have the formula for

[tex]_PH[/tex] = - log [[tex]H^{+}[/tex]]

[tex]_PH[/tex] = - log [ [tex]10^{-3}[/tex] ]

       = 3 log 10

  [tex]_PH[/tex] = 3

       

Hence, [tex]_PH[/tex] of water is 7 but after adding 1 drop (0.001 m [tex]HNO_3[/tex] ), It changes to 3.

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list 10 ways a small community can conserve energy and recourses??

Answers

1. Turn off lights.
2. Unplug devices your not using.
3. Change filters on your heating system.
4. Dry laundry on a clothes line.
5. Take shorter showers.
6. Cover bare floors.
7. Put on a sweater to use your AC less.
8. Ride a bike and not drive a car.
9. Use smart power strips
10. Replace light bulbs

Ideal Gas Law Question How many moles of C2H4O are in a 58.953 L container at 467.81kPa and 446.11 °C?

Answers

The number of moles of gas in the container would be 4.62 moles

Ideal gas law

According to the ideal gas law:

  PV = nRT, where P = pressure, V, volume, n = mole number, and R = constant = 8.31

In this case, V = 58.953 L, P 467.81 kPa, and T = 719.11 K

Making n the subject:

   n = PV/RT = 58.953 x 467.81/8.31 x 719.11 = 4.62 moles

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4. When 175 g of water is heated from 22.0°C, 1.57x106 J of energy are produced.
What is the final temperature of the water? (AT=Tr-Ti)

Answers

Answer: [tex]2168 ^{\circ} \text{C}[/tex]

Explanation:

For this question, we can use the formula [tex]Q=mc \triangle T[/tex], where [tex]Q[/tex] is the amount of heat absorbed, [tex]m[/tex] is the mass of the sample, [tex]c[/tex] is the specific heat constant, and [tex]\triangle T[/tex] is the change in temperature (final temperature minus initial temperature as stated in the question).

From the question, we know that [tex]m=175, Q=1.57 \times 10^{6}[/tex]. Furthermore, we know that [tex]c=4.18[/tex] (this is just a fact).

So, we get that [tex]1.57 \times 10^{6}=175(4.18)(\triangle T)[/tex], meaning [tex]\triangle T=2146[/tex].

Thus, [tex]t_{f}-22.0=2146 \longrightarrow t_{f}=\boxed{2168 ^{\circ} \text{C}}[/tex]

What is the mass of 3.35 mol Hg(103)2? (3 points)
1,700 g
1,840 g
1,960 g
2,110 g

Answers

Moles of Mercury Nitrate

200+(14+3(16))2200+(14+48)2200+2(62)200+124324g/mol

Mass

Molar mass×moles324(3.35)1085.4g

Answer:

1,840g

Explanation:

I just took the test and got it right :)

PLS I WILL GIVE BRAINLY How do the number of violence electrons of the light metals compared to those heavier than boron

Answers

The valence electron of the light metals are all in the range of 1 to 3.

What are Valence electron ?

Valence Electron is the number of electrons in the outer shell of an atom which participate in bond formation.

Number of Valence Electron in Boron is 3 and other light metals lighter than Boron have 1 , 2 of Lithium and Beryllium respectively,

The valence electron of the light metals are all in the range of 1 to 3.

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Draw the structures of the aldol addition and condensation products of pentanal

Answers

The structures of the aldol addition and condensation products of pentanal are attached as an Image with this answer.

What is Aldol Addition ?

An aldol addition is a reaction that occurs between the enolate of an aldehyde or ketone and the alpha-carbon of another aldehyde or ketone to form a beta-hydroxy aldehyde or ketone.

The term aldol condensation has to do with a reaction in which a nucleophile attacks the carbonyl group of an aldehyde or a ketone to convert it to the enolate from which attacks another aldehyde or ketone at the carbonyl carbon to form the required product.

The product obtained in the process is shown in the image attached with the answer.

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When doing a chin-up, a physics student lifts her 42.0-kg body a distance of 0.25 meters in 2 seconds. what is the power delivered by the student's biceps?

Answers

The power delivered by the student's biceps will be 51.45W.

What is Power?

This is defined as the amount of energy converted per unit and the SI unit is Watts.

Power = Energy/time

Force = ma = 42 kg × 9.8m/s² = 411.6N.

Energy = Force × distance

           = 411.6N × 0.25m = 102.9J

Power = 102.9J/2s = 51.45W

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The equations are not balanced. which equation would have the same coefficients in the same order as 2co2 3h20 c2h6o 3o2? fecl3 nh4oh fe(oh)3 nh4cl ch4 o2 co2 h2o fe h2so4 fe2(so4)3 h2 pcl5 h2o hcl h3po4

Answers

[tex]2 Fe (s) + 3 H _2SO _4 (aq)[/tex] → [tex]Fe _2(SO _4) _3 (s) + 3 H _2 (g)[/tex] equation has the same coefficients in the same order as [tex]3 O_2 + C_2H_6O[/tex] → [tex]2 CO_2 + 3 H_2O[/tex]

What are coefficients in the balanced equation?

The numbers placed in front of formulas to balance equations are called coefficients.

For the given equation [tex]3 O_2 + C_2H_6O[/tex] → [tex]2 CO_2 + 3 H_2O[/tex] sum of the coefficient of the reactant side is 5 and sum of the coefficient is 4.

So, according to the question [tex]2 Fe (s) + 3 H _2SO _4 (aq)[/tex] → [tex]Fe _2(SO _4) _3 (s) + 3 H _2 (g)[/tex] equation has the same coefficients in the same order as [tex]3 O_2 + C_2H_6O[/tex] → [tex]2 CO_2 + 3 H_2O[/tex]

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Answer:

It’s c

Explanation:

edge 2022

Mention two substance that sublines​

Answers

Familiar substances that sublime readily include iodine , dry ice , menthol, and camphor. Sublimation is occasionally used in the laboratory as a method for purification of solids, for example, with caffeine.

what is the answer and why?

Answers

Answer:

D

Explanation:

There are 2 oxygens on the reactants side (OH)2 but 4 on the products side (2H2O). You cannot get 2 oxygens out of nowhere, so it is not balanced.

192 grams of (NH 4 ) 2 CO 3 (N Molar Mass : 96g ) are dissolved to make 2150 mL of solution , what is the concentration of this solution ?

Answers

The concentration of a solution of 192 grams dissolved to make 2150 mL of solution is 0.93M. Details about concentration can be found below.

How to calculate concentration?

The concentration of a solution can be calculated by dividing the number of moles of the substance by its volume.

no of moles of NH42CO3 = 192g ÷ 96g/mol = 2 mol

Concentration of solution = 2 moles ÷ 2.15L

Concentration of solution = 0.93M

Therefore, the concentration of a solution of 192 grams dissolved to make 2150 mL of solution is 0.93M.

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What kind of engine does a hybrid car use?

Answers

Answer:

l think gasoline and electric

Select the correct answer from each drop-down menu.
What are the two criteria for designation as a biodiversity hotspot?
For a habitat to be declared a biodiversity hotspot, it must either

Answers

The criteria for designation as a biodiversity hotspot include species richness, endemism, and risk of extinction.

What is a biodiversity hotspot?

A biodiversity hotspot is a region having high levels of biodiversity in its communities and ecosystems.

A biodiversity hotspot must have a high number of endemic vascular plants (at least 1500 species).

In conclusion, the criteria for designation as a biodiversity hotspot include species richness, endemism, and risk of extinction.

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11) A sample of 131I decays to 1.0 gram in 40 days. What was the mass of the original sample? [half-life = 8.07 days]
A) 32 g
C) 16 g
D) 8.0 g
B)4.0 g

Answers

Given the remaining quantity after the given time and the half-life, the initial quantity or original mass of the sample is 32g.

Option A) is the correct answer.

What was the mass of the original sample?

Half-life is simply the amount of time it takes a given quantity to decrease to half of its initial value.

Using the expression:

[tex]N_{(t)} = N_{0}\frac{1}{2}^{\frac{t}{t_{\frac{1}{2} }} }[/tex]

Given the data in the question;

Remaining quantity Nt = 1.0gtime t = 40 daysHalf life t(1/2) = 8.07 days

[tex]N_{(t)} = N_{0}\frac{1}{2}^{\frac{t}{t_{\frac{1}{2} }} }[/tex]

[tex]1.0g = N_{0} * (0.5)^{40days/8.07days}\\\\1.0g = N_{0} * (0.5)^{4.95662949}\\\\1.0g = N_{0} * 0.0322037055\\\\N_{0} = \frac{1.0g}{0.0322037055} \\\\N_{0} = 31.05g = 32g[/tex]

Therefore, given the remaining quantity after the given time and the half-life, the initial quantity or original mass of the sample is 32g.

Option A) is the correct answer.

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What characteristics would show that this cat and kitten are related? Support your answer by explaining two inherited characteristics.

Answers

Specie and stripes
1. A cat and it’s litter can’t be related without the producer which in this case is the mother
2. The stripes shows that the two are related and yeah you can have to cats that have the same stripes but that’s not likely, every-time any two cats with stripes are put together the cats show similarities but that doesn’t tell us that their related. Every cat has similar stripes but there is something that’s always gonna be off with the stripes whether the stripes have the same color or the stripes have the same arrangement on the cat. Like people cats have similar traits but that doesn’t mean there related (ex: two blue eyed people, that’s doesn’t prove that their related in any type of way). Hopes this help!

what are the key concepts in the kinetic molecular theory (collision theory”

Answers

Answer:

The Police Officer

Explanation:

The Police Officer said : her key the best key on world

Is there another problem? Police officer Dua is right.

Why are no flying dinosaur fossils found in rocks that are younger than those
formed during the Mesozoic era?

Answers

The flying dinosaurs becoming extinct was the reason they were not found in rocks that are younger than those formed during the Mesozoic era.

What is a Fossil?

This is defined as preserved remains of plants and animals found on earth crust.

The flying dinosaurs became extinct which was why the fossils found during the Mesozoic era were not younger and makes option C correct.

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The Caribbean islands are known for their many resources. For example, the ore of aluminium is found in Jamaica and Guyana. (i) Briefly describe the extraction of aluminium from its named ore. Include in your description ONE ionic equation.​

Answers

Answer:

i don't know send on my insta I'd its_arsh_pb27

Explanation:

the process of chlorination in water treatment aims at ?​

Answers

Answer:

Chlorowanie wody jest procesem względnie tanim – koszt zbudowania samej instalacji do dezynfekcji, jak również koszt operacyjny wytworzenia 1 metra sześciennego uzdatnionej chlorem wody jest niższy od dezynfekcji wody za pomocą ozonu. Źródłem chloru w procesie dezynfekcji jest zazwyczaj podchloryn sodu, rzadziej dwutlenek chloru.

Explanation:

Can someone please help? This is really hard!!

Answers

Answer:

Less

Explanation:

The hydronium from the HCl is used to neutralize the bicarbonate in the baking soda. The hydronium is the acid and the bicarbonate ion is the base while the sodium and chloride ions are pH-neutral. Since theres a 1:1 mole ratio of hydronium to HCl and bicarbonate to sodium bicarbonate, it would require less HCl to neutralize a less concentration baking soda solution.

question -What happens to the energy of a wave if the amplitude of the wave is doubled?

Answers

The energy carried by the waves depends on the amplitude of the wave. If the amplitude is doubled then the energy gets increased by four times.

What is amplitude?

The amplitude of a wave is the distance from the center line to the trough or the crest of the wave. The energy of the wave is directly proportional to the square of the amplitude.

E  ∝ A²

So if the amplitude is doubled then E = 4. Hence, the energy gets increased quadruples times. The energy is related to the frequency and the wavelength of the wave that travels.

Therefore, the energy gets increased by four times if the amplitude is doubled.

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You are an archeologist digging up an ancient village and you discover a 10lb cat. A careful
analysis reveals 5 x 10-13 lbs. of carbon-14. How old is the cat, and presumably the village?

Answers

The age of the cat and presumably the village is approximately 13657 years. .

What is Half-Life?

Half-Life is the time taken for half the amount of a substance to disappear.

To determine the age of the cat fossil, the following should be noted:

The percentage of carbon in living organisms is 19.4%The mass of the cat is 10 lb.

Mass of carbon in the sample = 0.194 × 10 lb = 1.94 lb

Ratio of carbon-12 to carbon-14 = 1 : 1.35 × 10^-12

Mass of carbon-14 initially present = 1.94 × 1/1.35 × 10^-12 = 2.619 × 10^-12

Ratio of present and original mass of carbon-14 = (5 × 10-13)/2.619 × 10^-12 =

The half-life of carbon-14 = 5700 years

The ratio of the mass of carbon-14 at present and initially = 0.191

Using the half-life formula, to calculate time elapsed:

[tex]t = \frac{t_{\frac{1}{2}}ln\frac{N_t}{N_o}}{-0.693}[/tex]

Substituting the values to solve for time, t, in years

[tex]t = \frac{5700 \times \: ln(0.191) }{-0.693} = 13656.8[/tex]

Time elapsed, t = 13656.8 years.

Therefore, the age of the cat and presumably the village is approximately 13657 years.

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difference between practical work inside and outside laboratory​

Answers

Practical work refers to the art of conducting experiments in order to answer certain research questions.

What is practical work?

In science, practical work refers to the art of conducting experiments in order to answer certain research questions. This could occur in a laboratory under controlled conditions or in the field.

In the physical sciences, most of the practical work is conducted in the laboratory under controlled conditions. However, some experiments in the biological sciences and most experiments in the social sciences are conducted outside the laboratory.

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HELP HELP HELP PLEASE

The diagram shows the reactants in the chemical reaction when carbon (C) is
combined with hydrogen (H) to produce methane. C + 4H - ??

Answers

The third choice is correct.

Why would scientists use molar volume to measure gases?

Answers

Answer:

The molar volume of a gas expresses the volume occupied by 1 mole of that respective gas under certain temperature and pressure conditions.

scientists use molar volume to measure gas because it it tells us about volume occupied by gas.

Molar volume

The molar volume of a gas tell us about volume occupied by 1 mole of that respective gas under certain temperature and pressure conditions.At STP(Standard Temperature and Pressure) condition which is equal to 22.4 L for 1 mole of any ideal gas at a temperature equal to 273.15 K and a pressure equal to 1.00 atm.The molar volume of a gas is derived from the ideal gas law PV=NRT

Types of Temperature ?​

Answers

Answer:

Is Fahrenheit and Celsius the answers you are looking for?

Explanation:

I hope this could help you! :)

Answer:

Types of Temperature ?

Temperature Scales. There are three temperature scales in use today

Fahrenheit, Celsius and Kelvin.

Explanation:

Always remember:beluga always love answer your question by following these steps:Follow belugaask meBrainliest me first oktake note please: everyone i answer question I got happy:)please don't delete Your question beacause Brainliest Marks & pointswill be lose

Which of these actions would increase heat transfer between two objects?
&
establishing their thermal equilibrium
increasing the area of their contact
using objects with similar specific heats
• reducing the time of their contact

Answers

Heat transfer is the phenomenon that occurs when the two objects are in the vicinity of each other and by increasing the area of their contact. Thus, option B is correct.

What is heat transfer?

Heat transfer is a process that flows the heat from one system to another, and is because of the difference in the temperature of the two objects that are part of the system.

The methods like conduction, convection, and radiation transfer the heat from the surface area to the other object. The heat gets transferred from the area of high to the low temperature.

Therefore, option B. by increasing the surface area the heat transfer increases.

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Matter can undergo chemical reactions and nuclear reactions. Which statement is true only for nuclear reactions?

A - The mass of reactants is conserved
B - The energy of reactants is conserved
C - The atoms are reorganized into products.
D - The nuclei of the atoms.

Answers

Answer:

B - The energy of reactants is conserved.

D - the nuclei of atoms changes completely ( if that's the option)

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