Athens was called a direct democracy because the people voted for the laws.

is this true?

Answer:

Altruism is a form of prosocial behavior, which is used to describe a person who is helping someone with no intention of having any internal or external reward in return. Some psychologists suggest that altruism is a key motivation for prosocial behavior.

Answer:

In order to survive.

Explanation:

A normally aquatic species adapt to the supralittoral fringe in order to survive in that environment. Supralittoral zone also referred to the area on coastlines and estuaries, that is regularly splashed, but not submerged by ocean water. This environment is different for the marine organisms that causes adverse effect on the marine organisms but these marine animals has the ability to adapt that environment by using certain mechanism in order to survive and easily reproduce in that environment.

Answer:

D

Explanation:

Guanine is a nitrogen base

Answer:

Heredity

Explanation:

i have no idea

GL

Answer:yes it's Heredity

Explanation:

Secondary succession is the kind of succession that might develop in a neighborhood park after the Zombie Apocalypse if the grass wasn't cut anymore and pioneer species would first colonize the bare soil.

Thus, pioneer species like weeds and grasses would colonize the bare soil and disturbed regions in the initial stage of secondary succession. These species can swiftly adapt to a new habitat since they are frequently resilient and rapidly developing.

In secondary succession, the pioneer species are the early settlers multiply and spread, the soil conditions become more stable and draw in additional species like shrubs and tiny trees. These animals are modifying the environment in a way that makes it possible for bigger and more diversified populations of creatures to live in more complicated settings.

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The population's gene pool, the frequency of the B allele is 0.7 (or 70%) and the frequency of the b allele is 0.3 (or 30%).

To calculate the frequencies of the two alleles (B and b) in the population's gene pool, we can use the allele frequency formula. The allele frequency is the proportion of a specific allele within a population.

Given the genotypes BB = 30, Bb = 10, and bb = 10, we can determine the number of alleles in the population as follows:

Number of B alleles = 2 * (number of BB genotypes) + (number of Bb genotypes)

= 2 * 30 + 10

= 60 + 10

= 70

Number of b alleles = 2 * (number of bb genotypes) + (number of Bb genotypes)

= 2 * 10 + 10

= 20 + 10

= 30

Next, we can calculate the frequencies of the two alleles:

Frequency of B allele = (Number of B alleles) / (Total number of alleles)

= 70 / (70 + 30)

= 70 / 100

= 0.7

Frequency of b allele = (Number of b alleles) / (Total number of alleles)

= 30 / (70 + 30)

= 30 / 100

= 0.3

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The specific DNA sequence where RNA polymerase binds and initiates transcription is called the promoter region.

Answer:

28% 72% not sure thogh!!!!!

The advantage that rabbits with floppy ears have over rabbits with straight ears is not entirely clear, and there are different hypotheses that attempt to explain this trait.

What is Floppy Ears?

Floppy ears refer to ears that hang down rather than standing upright. This trait is commonly observed in some dog breeds, such as Basset Hounds, and in rabbits, such as the lop-eared breed.

In rabbits, the floppy ear trait is caused by a genetic mutation that affects the development of cartilage in the ear. Normally, the ear cartilage is strong enough to support the weight of the ear and keep it standing upright. However, in rabbits with the mutation, the cartilage is weaker and less able to support the weight of the ear, causing it to flop down.

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When we say punnet square it is a square diagram that is used to predict the genotypes of a particular cross or breeding experiment.

Genotypic ratio: 1:2:1 (TT= 25% Tt= 50% tt=25%)

Phenotypic ratio: 3:1 (Tall= 75% Short= 25%)

Answer:

Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey

Explanation:

predation is the process itself where the predator for example the lion feeds on the prey like deer

Answer:

Well I believe mitosis is the reproduction of 2 cells, while meiosis is 4 cells

Answer:The answer is "gene flow at work."

Explanation:

Answer:

Explanation:

Lets Tan seed be TT

Red seed be tt

A cross between TT ×tt will produce 4 Tt

TT× tt

!

F1 Tt Tt Tt Tt

a. Tan seed is dominant with an allele TT. It effect dominate that of red seed indicating it is a dominant traits while red seed is a recessive traits.

A dominant trait is a traits that is expressed in the phenotype of an organism the F1 generation are all Tan seeds this shows that the trait is dominant.

The genotype of the F1 melon is Tt in a dominant form

The F2 result follows the mendelian principle where segregation occur leading to a phenotypic ratio of 3:1

72Tan seeds:24red seeds

Where the 72 tan seed has the highest ratio and 24 red seeds has the smaller ratio.

Tt ×Tt

!

F2 TT Tt Tt tt

Phenotypic ratio 3:1

Answer: Hello your question some missing data attached below is the complete question

answer:

P( first child having PKU )  0.25 ≤ x ≤ 0.5

Explanation:

The pedigree father has PKU ( pp ) ( From the top right )

pedigree mother = PP

The possible resultant progeny = Pp  

Resultant progeny marries non-carrier  ( Pp x PP ) = PP , PP, pP, pP

Hence B is either  ; PP ( non carrier ) or Pp ( carrier )

From left

one of the Resultant progeny = pp ( affected ). this simply means pedigree parents where both carriers or sufferers i.e. Pp or pp

Hence A is either ; Pp or pp

The probability of their first child having PKU

= PP x Pp = PP, Pp, PP, Pp ( probability = 0 in this case )

= Pp x Pp = PP, Pp, pP, pp ( probability = 1/4 * 100 = 25% )

= Pp x pp = Pp, Pp, pp, pp ( probability = 2/4 * 100 = 50% )

P( first child having PKU )  0.25 ≤ x ≤ 0.5

lets denote dominant Gene = PP,  recessive Gene = pp

Answer:

A cell has three main parts: the cell membrane, the nucleus, and the cytoplasm.

Explanation:

Hope it helps:)

Carotid sinus syncope refers to a condition characterized by a sudden loss of consciousness or fainting (syncope) that occurs due to an abnormal response of the carotid sinus, a small structure located in the neck. The carotid sinus contains baroreceptors, which are sensory receptors that monitor blood pressure.

In the case of Ms. G, her episode of syncope while showering was likely triggered by the pulsatile shower head. The carotid sinus is sensitive to changes in pressure, and certain stimuli, such as pressure on the neck, can result in an overstimulation of the carotid sinus baroreceptors.

The pulsatile nature of the shower head may have caused an increased pressure or stimulation on Ms. G's carotid sinus during her shower. This excessive stimulation of the carotid sinus baroreceptors led to a reflex response that caused a sudden drop in heart rate and blood pressure, resulting in syncope.

Carotid sinus syncope is typically diagnosed based on the patient's history, clinical symptoms, and sometimes with additional tests such as carotid sinus massage or tilt table testing. Treatment options for carotid sinus syncope may include avoiding triggering factors, modifying lifestyle, and in some cases, medication or pacemaker implantation.

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Paranthropus is a genus of hominin that is already extinct. They have two species which are the P. robustus and P. boisei. It existed about 2.5 to 1.5 million years ago. It was also one of the first discovered hominids. It evolved from P. aethiopicus or from other sourthern African species. P. robustos is the last among this group that are cibsidered of human ancestors. This group of human ancestors give as an idea that when was the ancient humans evolved.

Answer:

an atom is a solid material

Explanation:

i just took the test and initally i had put the answer that the person who had first answered had said which was "electrons are arranged in layers", and i got it wrong. the correct answer was supposed to be "an atom is a solid material".

Ima see how long it takes for someone to delete my answer from this moment forward

Btw I didn't feel like doing the work but an atom is solid material kk

Answer:

pH = 3.215

Explanation:

From the given information;

Using the equation for the dilution of  a stock solution:

Since moles of C5H5N = moles of HNO3

Then:

\(M_{C_5H_5N}\times V_{C_5H_5N}= M_{HNO_3}\times V_{HNO_3}\)

\(0.0750 M \times 2.65 L = 0.407 M \times V_{HNO_3}\)

\(V_{HNO_3}= \dfrac{0.0750 M \times 2.65 L}{0.407 M}\)

\(V_{HNO_3}=488.33 \ mL\)

The reaction between C5H5NH and H2O is as follows:

\(C_5H_5N^+H + H_2O\) ⇄ \(C_5H_5N + H_3O^+\)

\(Molarity \ of \ C_5H_5N^+H = \dfrac{moles}{addition \ of\ the\ total\ volume}\)

\(Molarity \ of \ C_5H_5N^+H = \dfrac{0.0750 \ M \times 2.65 \ L}{2.65 \ L + 0.48833 \ L}\)

\(Molarity \ of \ C_5H_5N^+H = \dfrac{0.19875 \ ML}{3.13833 L }\)

\(= \ 0.06333\ M\)

Now, the next step is to draw out the I.C.E table.

    \(C_5H_5N^+H + H_2O\) ⇄ \(C_5H_5N + H_3O^+\)

I       0.06333                      0          0

C        - x                               x          x  

E      0.06333 -x                   x          x

\(K_a = \dfrac{10^{-14}}{1.7 \times 10^{-19}} \\ \\ K_a = 5.8824 \times 10^{-6}\)

\(K_a = \dfrac{[C_5H_5N][H_3O^+] }{[C_5H_5N^+H] } \\ \\ 5.8824 \times 10^{-6} = \dfrac{x^2}{0.06333 - x}\)

Assuming x < 0.06333

\(x^2 = 5.8824 \times 10^{-6} \times 0.06333\)

Then

\(x^2 = 3.72532392 \times 10^{-7} \\ \\ x= \sqrt{3.72532392 \times 10^{-7}} \\ \\ x = 6.1035 \times 10^{-4} \ M\)

\([H_3O^+] = x = 6.1035 \times 10^{-4} \ M \\ \\ pH = -log (6.1035 \times 10^{-4}) \\ \\ \mathbf{\\ pH = 3.215}\)

The pH for  HNO3 needed to reach the equivalence point in the titration of 2.65 L of 0.0750 M pyridine (C5H5N, Kb = 1.7 × 10−9) is

HNO3 + C5H5N→CSH5NH + + NO3

Moles of C5H5N = volume x concentration

=2.65 x 0.0750

=0.1987 mol

Moles of HNO3 needed = moles of C5H5N = 0.19875 mol Volume of HNO3 eeded = moles / con

=0.19875/0.54

=0.363L

=363 mL

At the equivalence point, most effective C5H5NH + a NO3-are Moles of C5H5NH+ = moles of C5H5N = 0.19875 mol

Total extent of answer n = 2.65 + 0.363 =3.013 L

Initial concentration [ C5H5NH + ] o = moles/ volume =0.19875/3.013 =0.06596 M

Kb of C5H5N = 1.7 x 10 ^  9

By fixing the equation,

H + = 6.199 * 10 ^ 4 M

pH=-log[H+]

=3.207

=3.21 pH

The pH is the degree of ways acidic or simple a substance is. In humans, pH stability performs a position in preserving the frame functioning optimally. The best pH of the frame is barely alkaline, which helps sure biochemical reactions like oxygenating the blood.

Thus it is clear above.

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Answer: C

Explanation: Without the help of sea otters it would potentially cause a massive spike in sea urchin population which would destroy the ecosystem because some animals wouldn’t have enough food because they’re eating all of it

Answer:

all living organisms are made of carbon.

Explanation:

Answer:

B.  phagocytosis

Explanation:

Taking the Study Island lesson as I type this.

In this food web, we can see that the primary producer is grass, after this, we have the primary consumers as is the case of Locust, then comes the second level of consumers like Scorpion or tick, then we have the third level of consumers such as baboon. Finally, we get to the last level where are located the apex predators as Leopard or Hyena, They receive this name as no one predates them therefore they are at the apex.

they both help to maintain homeostasis.

Answer:

The answer would be

-Sunlight shining on plant leaves causes them to lose water by TRANSPIRATION

-This water becomes part of the  EVAPORATION into liquid water droplets.

-When water vapor cools it CONDENCATES into liquid water droplets.

-Liquid + frozen PRESIPITATION falls to Earths surface because of gravity.

Explanation:

all you have to do is look up a picture of a water cycle diagram. I included an example of one. Hope this helps!

In a battery-powered radio, the energy is in the form of chemical potential energy stored in the battery, which is converted into electrical energy to power the radio's circuitry and speakers.

In a hydropower dam, the energy is in the form of kinetic energy of the moving water, which is converted into electrical energy by turbines that spin generators.

Using an unplugged iPhone does not involve any energy, as the phone is not in use and is not consuming or producing any form of energy.

Energy is a fundamental property of matter and can exist in many forms, including kinetic energy (the energy of motion), potential energy (stored energy), thermal energy (the energy of heat), electrical energy (the energy of charged particles), electromagnetic energy (the energy of electromagnetic waves), and nuclear energy (the energy stored in the nuclei of atoms). Energy is essential for all physical processes and is conserved, meaning it can be neither created nor destroyed, only converted from one form to another.

Energy can be converted from one form to another. For example, in a hydropower dam, the energy is in the form of kinetic energy of the moving water, which is converted into electrical energy by turbines that spin generators.

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