Below are atomic-scale models of two different substances. Use the terms in the word bank to label these models. Use each of the terms only once.

Answer:

A embryo's, Whales have small back limbs which disappear before birth.

Explanation:

There are lots of evidence in a whale's body and biology suggesting its ancestors lived on land. They have paddle-shaped flippers that encase hand bones with five 'fingers,' and they breathe air and feed their young with their own milk.

Answer:

no it doesn't change back

fine here When you dissolve salt in water, the sodium chloride dissociates in Na + ions and Cl - ions, which may be written as a chemical equation : NaCl (s) → Na + (aq) + Cl - (aq) Therefore, dissolving salt in water is a chemical change. The reactant (sodium chloride, or NaCl) is different from the products (sodium cation and chlorine anion).

My prediction for what science and technology may occur in the next few decades is the increase of groundwater increasing, with many drought occurrences to the environment. For technology, I suppose that there may be some new inventions for both political and environmental usage to increase the intensification of agriculture in order for us to have crops to eat. Furthermore, I predict that our significant key issues are resolved as time goes on, such as global warming, inflation, ocean acidification, etc.

Answer:

data given we have a current of 0.25A and potential difference of 220V then from ohm's law I=V/R 0.25A=220V/R cross multiplication you get 0.25A×R=220V divide by 0.25A on both side you get 880 ohms

Answer:

electromagnetic radiation

Explanation:

electromagnetic radiation: Energy that travels as a wave, including forms of light. Electromagnetic radiation is typically classified by its wavelength. The spectrum of electromagnetic radiation ranges from radio waves to gamma rays. It also includes microwaves and visible light.

Answer:

The change in overall position

Explanation:

Answer:

nervous system

Explanation:

nervous system

nervous systemsystemsystem

Explanation:

The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium. From the left atrium blood flows into the left ventricle.

Answer:

solid substances

Explanation:

A value from 0 to 14 is used to specify how acidic or basic a compound is when it is dissolved in water= pH

A compound that increases hydroxide ions (OH−) when it is dissolved in a solution= Acid

A compound that increases hydrogen ions (H+) when it is dissolved in a solution= ions

Used to measure the pH of substances by determining their hydrogen ion concentration= base

Answer:  pH goes with A value from 0 to 14 is used to specify how acidic or basic a compound is when it is dissolved in water

base goes with A compound that increases hydroxide ions (OH−) when it is dissolved in a solution

ions goes with Used to measure the pH of substances by determining their hydrogen ion concentration

acid goes with A compound that increases hydrogen ions (H+) when it is dissolved in a solution

Explanation: i took the test and got it right

Answer:

880 Ω (Ohms)

Explanation:

To calculate Resistance from Potential Difference (Volts) and Current (Amps), you use the equation R = V/I

So,

R = 220/0.25

R= 880

Answer:

Both, much of the artic is a desert including the artic basin, Canadian Artic Archipelgo, and the north pole because the average precipitation is between 150-250mm. This is below 250mm which is the agreed level to be considered a desert.

Top box :-

Hence it should be atom

#Top right box

Hence answer should be molecules

#Bottom left:-

Denoted to Whole branching of KCl h.ce it's repeating atom group

#Last

CH_4 's extended structure is shown hence it's extended structure

Answer:

Lipids

Explanation:

D:)

Answer:

Lipids and Proteins

Explanation:

Hope this helps <3

Answer:

Well there is a lot of differences between the two. Its called homogeneous and Heterogeneous mixtures. Homogeneous mixtures are all the substances are evenly distributed throughout the mixture (salt water, air, blood).  Heterogeneous mixtures are the substances that are not evenly distributed (chocolate chip cookies, pizza, rocks). So Pasta with sauce and meatballs is heterogeneous and air is homogeneous




HOPE THIS HELPS HAVE A GREAT DAY!!~

Explanation:

Answer:

The veins that carry oxygenated bloof back into the heart are the pulmonary arteries.

Explanation:

Oxygen-rich blood flows from the lungs back into the left atrium (LA), or the left upper chamber of the heart, through four pulmonary veins. Oxygen-rich blood then flows through the mitral valve (MV) into the left ventricle (LV), or the left lower chamber.

Answer:

The veins that carry oxygenated bloof back into the heart are the pulmonary arteries.

Explanation:

Answer:

i need more information give me more pictures

Explanation:

lol

Answer:

the data will support my theory if the results are right for my hypothisis

Explanation:

Sodium oxide has a high melting point because of the strength ofits bonds. Due to having strong bonds, they cannot be broken veryeasily. Magnesium chloride is ionic compound. There is a strong electrostatic force of attraction between 2 chloride atoms and 1 magnesium atom.

Because it retains its strength at very high temperatures. It is considered a refractory material with a melting point of 6500 degrees F. It is also very non-reactive with other materials that might be put into the furnace and is even used to make crucibles - containers used to melt other substances.

Answer:

(4) Inner core. (5) magma. (6) crust (7) Convection current. (8) energy waves

Explanation:

Answer:

Mutations occur throughout the natural world.

Explanation:

-A-Astro

Answer:

Ultraviolet radiation is the electromagnetic wave used in sterilizing water in drinking fountains.

Explanation:

Ultra Violet (UV) light disinfection is one water treatment system that can be used to remove most forms of microbiological contamination from wate

Answer: You need the mass of the bat and the length in some-type of units.

Explanation:

Answer:

Let the volume of the block of wood be

V

c

m

3

and its density be

d

w

g

c

m

−

3

So the weight of the block

=

V

d

w

g

dyne, where g is the acceleration due to gravity

=

980

c

m

s

−

2

The block floats in liquid of density

0.8

g

c

m

−

3

with

1

4

t

h

of its volume submerged.So the upward buoyant force acting on the block is the weight of displaced liquid

=

1

4

V

×

0.8

×

g

dyne.

Hence by cindition of floatation

V

×

d

w

×

g

=

1

4

×

V

×

0.8

×

g

⇒

d

w

=

0.2

g

c

m

-3

,

Now let the density of oil be

d

o

g

c

m

-3

The block floats in oil with 60% of its volume submerged.So the buoyant force balancing the weight of the block is the weight of displaced oil =

60

%

×

V

×

d

o

×

g

dyne

Now applying the condition of floatation we get

60

%

×

V

×

d

o

×

g

=

V

×

d

w

×

g

⇒

60

100

×

V

×

d

o

×

g

=

V

×

0.2

×

g

⇒

d

o

=

0.2

×

10

6

=

1

3

=

0.33

g

c

m

−

3

Explanation:

Answer:

The food web provides a better model of an ecosystem because the food web is a model between MANY different consumers and producers in an ecosystem. … The food chain would break down and if the food chain breaks down all the animals would die, and the ecosystem will no longer exist.

Explanation:

Answer:

Blood enters the right atrium and passes through the right ventricle.

Explanation:

The two bottom chambers are the right ventricle and the left ventricle. These pump blood out of the heart.