An oval shape, which may be elongated or nearly circular; the shape of the planet’s orbits.

Answer:

Explanation: Molar mass of BeCI2 is 274.83182 ± 0.00086 g/mol Copy to clipboard.

In the given graph, the Evolved Population is showing disruptive selection. Hence, the correct option is A. Disruptive selection.

Stabilizing selection is a form of natural selection where individuals with average phenotypes are more likely to survive and reproduce their number. In this selection, the population tends to maintain a stable phenotype. As shown in the graph, the population is maximum for the population having a moderate length of neck.

Disruptive selection is a type of natural selection where extreme phenotypes are preferred over average phenotypes, leading to an increase in genetic variation and the population becoming more diverse. In this type of selection, the population diverges into two or more distinct phenotypic groups. As shown in the graph, two ranges of the population are favored for having traits for extreme lengths of the neck.

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Answer:

A. Semi-amplitude is half the distance of the peak-to-peak amplitude

Explanation:

The correct answer is : The semi-amplitude is half the distance of the peak-to-peak amplitude (option A). The peak-to-peak amplitude is the total distance between the highest positive peak and the lowest negative peak in a waveform. It represents the full range of variation in the amplitude of the waveform.

The peak-to-peak amplitude of a waveform is the measurement of the total distance between the highest positive peak and the lowest negative peak. It provides information about the full range of variations in the amplitude of the waveform. Mathematically, it is calculated by subtracting the minimum value from the maximum value of the waveform.

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Answer:

D

Explanation:

san atom is made of electrons, protons and neutrons

Answer:molecules

Explanation:

Answer:

Your answer is b

Explanation:

the answer is b because if there is no phytoplankton then there will be no fish and if you take out one part of the food chain then the whole chain comes apart. So meaning if there is no phytoplankton, then there is no fish, if there isn't any fish, then the other animals that come to eat at the river will eventually starve to death or move somewhere else to get more food.

The statement that supports the fact that phytoplankton are one of the most important parts of the food web in the Hudson river is; "the decrease in phytoplankton caused a decrease in the river's zooplankton, fish, and native mussel populations."

Phytoplankton refers to the microscopic and photosynthetic organisms found in water bodies. They are able to trap energy directly from the sun to produce their own food by photosynthesis.

If this primary productivity is hampered in the food web in the Hudson river, there will be nothing for the small fishes to and other native populations to eat and their population will begin to decrease.

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To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.

Answer:

condensation

Explanation:

Answer:

a

Explanation:

Aquifers are underground layers of rock that are saturated with water that can be brought to the surface through natural springs or by pumping.

Answer:

Heterogeneous

Particle size: 1-1000 nm, dispersed; large molecules or aggregates

Do not separate on standing

Cannot be separated by filtration

Scatter light (Tyndall effect)

Answer:

B the air rises in temperature

The air rises in temperature when it subjected to less pressure.

The force excreted by per unit area is called pressure.

An air contains gases and when pressure of air is less, it means there is spaces between gases molecule to move freely then gases molecule collide with each other and due to collision temperature of air is increases.

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Answer:I THINK IT IS BURNING FOSSIL FUELS HAS A NEGITIVE IMPACE ON THE ENVIROMENt

Explanation: it makes the most sense i think

Answer:

true, false, 0

Explanation:

Answer:

1. False: metallic character decreases as you move from left to right.

2. Nobel gas is your best bet since Helium has the lowest melting point.

3. False: scale can refer to small or large.

4. 1 chlorine atom

Answer:

option A, because Lithium and Chlorine both have their valency 1.

hope that helps...

Answer:

High luster- shiny: metals

Low luster- dull: non-metals

Is Ductile- can be pulled into thin wires: metals

Not ductile: non-metals

Not malleable- is brittle: non-metals

Is malleable- elements can be hammered into thin sheets: metals

Poor conductors of heat and electricity: non-metals

Good conductors of heat and electricity: metals

Located on the left side of the periodic table: metals

Located on the right side of the periodic table: non-metals

sorry if i got something wrong but i think this is all right

hope this helps :)

Answer:

High luster shiny is the characteristic of metals while low luster and dull is a non metal.

Metals are ductile because wires are made up of metals which is due to their ductility. non metals are not ductile.

Non metals are non melliable while metals are melliable

Non metals are poor conductor while metals are good conductor of heat and electricity.

Metals are located on the left side while non metals are located on right side of periodic table.

Explanation:

The properties of all of these material vary from each other. Paper, cardboard and plastic are insulators and metals and conductors. Each of them has different physical properties.

The physical properties of a substance include properties which changes its physical structure, size, shape, phase etc. Solubility, conductivity, resistance etc. are also physical properties.

Here, paper, cupboard and plastic are insulators and they does not conduct electricity. Whereas, metals are very good conductors and they have wide range of applications in optoelectronic devices.

Each of these materials has different melting temperature and different uses. Their density also vary significantly. The paper is the less dense one here and metals are denser.

The applications of these materials are based on their physical properties.

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Explanation:

Air has a heat capacity of about 700 Joules per kg per °K and a density of just 1.2 kg/m3, so its initial energy would be 700 x 1 x 1.2 x 293 = 246,120 Joules

Answer:

nothing is here

Explanation:

Answer:

Three essential theories for Earth Science are the theory of evolution, the theory of plate tectonics, and the theory that human activities are altering Earth's climate

Explanation:

Three essential theories for Earth Science are the theory of evolution, the theory of plate tectonics, and the theory that human activities are altering Earth's climate

Let us go option by option :

1) Genes are located in chromosomes. TRUE

Chromosomes are in cell nucleus. A chromosome contains hundreds and thousands of genes. A normal have 23 pairs of chromosomes, and a total of 46.

2) Chromosomes are the in nucleus.

TRUE

Chromosome is structure found in nucleus of the cell. It is made up of protein and DNA.

3) A single Chromosome can contain hundreds of genes.

TRUE

single Chromosome can contain hundreds of tgenes.

4) All of the above

TRUE

As all the statements above are true. The correct option is 4.

Answer:

all of them are true

Explanation:

this is because chromosomes contain genetic materials and it is present in the nucleus.
Therefore, the correct option is 4) all of these are true

no problem

Answer:

a. 0.33 g/mL

Explanation:

We already know what the mass is (9 grams) so we have to find the volume of the cube next.

Volume = lwh

             =(3)(3(3)

             = 27

To find density, you have to find mass/volume

density = mass /volume

density = 9 g /27 mL             (cm 3 and mL are basically the same thing)

            = 0.33 g/mL

Answer:

sugar-water is a mixture not a compound.(homogeneous mixture.)

Explanation:

Compounds are substances formed by the chemical combination of two or more elements. Mixtures are substances formed by physically mixing two or more substances together.

The solution of sugar in water is considered a mixture not a compound because the particles of sugar and water are not completely dissolve nor mixed in a fixed proportion or ratio. hope this helped :)

Answer: Either 1. the amount of energy in sound waves.

or 3. the total amount of change from one wave to the next.

Tell me which one is right please.

answer:

The first in the row is correct

Answer:

.8 m/s^2

Explanation:

A= Force x Mass

.4 x 2 = .8