please help i genuinely don’t know what to do

Nitrogen-fixers are the critical links between atmospheric nitrogen and organisms that need nitrogen to survive.

Nitrogen fixers are the compounds which are used in the nitrogen fixation process to convert the nitrogen molecule in other nitrogenous compounds.

So, the nitrogen fixers converts the atmospheric nitrogen molecule (N₂) into the other compounds like ammonia (NH₃) or any other useful nitrogenous compounds which will be used or absorbed by the soil or any other aquatic species. Some examples of nitrogen fixers are bacteria, clostridium, rhizobium, and many more.

Hence option (A) is correct i.e. atmospheric nitrogen and organisms that need nitrogen to survive.

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Answer:

Dominant traits are always expressed when the connected allele is dominant, even if only one copy exists. Recessive traits are expressed only if both the connected alleles are recessive.

Explanation:

Freckles, cleft chin and dimples are all examples of a dominant trait.

The ideal gas relates the volume, pressure, and temperature to each other. The balloon was cooled to -120 degrees celsius.

Charle's law states the direct relationship between the volume and the temperature of the hypothetical gas. The law is given as,

[tex]\rm \dfrac{V_{1}}{T_{1}} = \rm \dfrac{V_{2}}{T_{2}}[/tex]

As it can be seen from the question the volume of the gas in the balloon is decreasing so the temperature will also decrease.

Given,

Initial volume = 12.0 L

Final volume = 5.0 L

Initial temperature = 357.15 K

The final temperature is calculated as:

[tex]\begin{aligned} \rm T_{2} &= \rm \dfrac{V_{2}T_{1}}{V_{1}}\\\\&= \dfrac{5\times 357.15}{12}\\\\&= 148.81\;\rm K\end{aligned}[/tex]

Therefore, -120 degrees celsius is the final temperature of the balloon.

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Answer:

A chemical reaction

Explanation:

Answer:C

Explanation:

Homogeneous Mixture

Answer:

homogeneous mixture

Explanation:

it is the same throughout so therefore it can be separated

Answer:

let me tell u what ASAP stands for Explanation:

Answer:

the answer is 102- i took did it on edg

Explanation:

The ability of a material, the solute, to combine with some other substance, the solvent, is known as solubility. Temperature of the water to the nearest degree is 110 °C for the given solubility.

The ability of a material, the solute, to combine with some other substance, the solvent, is known as solubility in chemistry. Insolubility, or the solute's inability to create such a solution, is the opposite property.

The concentration of a solute inside a saturated solution—a solution where no more solute could be dissolved—is typically used to gauge the degree of a substance's solubility in a particular solvent. Temperature of the water to the nearest degree is 110 °C for the given solubility.

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a transverse wave, this is the magnitude of height of a wave from origin to crest. In a longitudinal wave, this is corresponds to how much the wave is compressed, as compared to areas of little compression. This is wave whose energy travels in the same direction as the energy is transferred

In a transverse wave, amplitude is the magnitude of height of a wave from origin to crest. In a longitudinal wave, crest is corresponds to how much the wave is compressed

A wave is a dynamic disturbance of one or more quantities that propagates and is commonly described by a wave equation.

Hence for the transverse wave that is amplitude and for the longitudinal wave that is crest.

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Answer:

El número atómico se refiere al número de protones o electrones de un átomo.

Explicación:

El número atómico se refiere a la cantidad de protones o la cantidad de electrones que giran alrededor de las capas u órbita de un átomo, por lo que el número atómico 7 representa que el átomo tiene 7 electrones o protones mientras que, por otro lado, el número atómico 17 muestra el número de electrones o protón. Solo hay dos electrones que entran en la primera órbita y en el resto de las capas tiene espacio para 8 electrones por lo que los átomos pierden o agregan electrones en su capa más externa para obtener estabilidad.

Answer:

Gravitational potential energy of water behind the dam

Explanation:

Energy can be defined as the ability (capacity) to do work. The two (2) main types of energy are;

a. Gravitational potential energy (GPE): it is an energy possessed by an object or body due to its position above the earth.

b. Kinetic energy (KE): it is an energy possessed by an object or body due to its motion.

Hydroelectric power plant refers to a renewable source of energy used for the generation of electricity, through the use of powerful hydraulic steam turbines operating at high voltage and are being driven by the energy acquired by water falling from a height and flowing through a penstock (pipe) i.e the mechanical energy (gravitational potential energy + kinetic energy).

At a hydroelectric power plant, potential energy is changed into kinetic energy. The kinetic energy is then transformed into electrical energy.

The source of the energy that turns the turbine in the power plant is Gravitational potential energy of water behind the dam, usually from streams or rivers.

Answer:

Explanation:

It is volume-volume problems that does not require the use of molar mass.

Answer:

Fluorine

Explanation:

It's tendency to gain electron is higher than Ca and P

Answer:

pKa = 3.97

Explanation:

Let's state the equations:

NaA →  A⁻  +  Na⁺

A⁻ + H₂O  ⇄  OH⁻  +  HA    Kb

We don't have the concentration of [OH⁻] but we do know pH, so we can determine, pOH and after that, [OH⁻].

14 - pH = pOH → 14 - 8.70 = 5.30

10^-pOH = [OH⁻]  → 10⁻⁵'³⁰ = 5.01×10⁻⁶ M

Initially we can know, the moles of base, we had.

20 mL . 0.27M = 5.4 mmoles. So now, let's make the expression for Kb.

Kb = [OH⁻] . HA / [A⁻]

As the [OH⁻]  is so low, we can assume, there where no loses and the salt is well concentrated. So:

Kb = (5.01×10⁻⁶)² / 0.27 → 9.29×10⁻¹¹

Kw = Ka . Kb, then Ka = Kw/ Kb

Ka = 1×10⁻¹⁴ /9.29×10⁻¹¹ = 1.08×10⁻⁴

pKa = - log Ka → - log 1.08×10⁻⁴ = 3.97

Answer:

it's the third

Explanation:

I need to fill 20 spaces. don't mind that

Answer:

Na gains two protons from Cl.

Explanation:

this should help

Answer:

Secure landfills Landfilling of hazardous solid or containerized waste is regulated more stringently than landfilling of municipal solid waste. Hazardous wastes must be deposited in so-called secure landfills, which provide at least 3 metres (10 feet) of separation between the bottom of the landfill and the underlying bedrock or groundwater table.

Explanation:

Answer:

-1, 0, +1

Explanation:

n = 2 n = 0,1,2,3,.................n

l= n-1 = 2-1 =1. l= 1,2,3,4....................n-1

m = l is 1 so now write the value of magnetic moment as -1,0,+1

for eg . if the value of l comes to 2 then u will write the value of m as -2,-1,0,+1,+2 .

i hope it will help u .....

Answer:

15

Explanation:

because since the outer shell has 5 electron then add 5 and 10 to get 15

Answer:

solute

Explanation:

for example sugar salt etc

solute dissolve in solvent

Answer:

In plants, chloroplasts occur in all green tissues, though they are concentrated particularly in the parenchyma cells of the leaf mesophyl. An example of a chloroplast is a cell in algae that consumes carbon dioxide and releases oxygen while creating sugar. A plastid that contains chlorophyll and is found in the cells of green plants and algae.

Explanation:

please mark brainlest

Answer: I would say C or D.

Explanation: Maybe because there are four main tissue types in the body: epithelial, connective, muscle, and nervous. Each is designed for specific functions.

In chloroplast it is the structure within the cells of plants and green algae.

In stomach tissue has a thin simple columnar epithelial layer for secretion and absorption.

In bone tissue it is tissue that gives strength and structure to bones. Bone is made up of compact tissue (the hard, outer layer) and cancellous tissue (the spongy, inner layer that contains red marrow). Bone tissue is maintained by bone-forming cells called osteoblasts and cells that break down bone called osteoclasts.

Explanation:

Transmutation, conversion of one chemical element into another. A transmutation entails a change in the structure of atomic nuclei and hence may be induced by a nuclear reaction (q.v.), such as neutron capture, or occur spontaneously by radioactive decay, such as alpha decay and beta decay (qq. v.).

Answer:

From my view the answer is

D. Forests

Answer:

the answer is twenty-four

Answer:

fluid - A  is 1.03

fluid -B is 0.790

fluid - C is 0.90

Explanation:

In our exprimetal fluid, the density of

fluid - A  is 1.03

fluid -B is 0.790

fluid - C is 0.90

The fluid with high density settles at bottom of the beaker and least dense fluid forms layer on the surface .

Fluid A is 1.03

Fluid B is 0.790

Fluid C is 0.90

Measurment is a process by which we can measure any physical quantity with the help of different apparatus. For example if one can want to measure the distance than he can use the a simple measuring scale.

Distance can be measured in kilometer,meter, centimeter etc. Temperature can be measured with the help of glass tube thermometer as glass tube is a simple temperature measuring appratus and glass tube thermometer is used to measure temperature in fahrenheit (F).

Measurment is a general process which can be used by a common person in his daily life. Every common thing which we use in our routine life need to be measured like if we buy sugar it will be measured in kilogram or gram. If a person buy milk it can measured in liter.

Therefore,Fluid A is 1.03

Fluid B is 0.790

Fluid C is 0.90

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