Excretory system
The excretory system removes waste and toxins from the human body.
Your skin eliminates waste by sweating.
Your lungs eliminate carbon dioxide.
Your kidneys filter over 180 liters of blood in order to produce urine.
The kidneys filter waste like urea. This liquid that is collected is called urine.
Your kidneys are made up of millions of filtering units called nephrons.

⁣Cornea: The cornea is the clear outer part of the eye's focusing system located at the front of the eye. Iris: The iris is the colored part of the eye that regulates the amount of light entering the eye. Lens: The lens is a clear part of the eye behind the iris that helps to focus light, or an image, on the retina.

⁣Stomata are generally more numerous on the underside of leaves. They provide for the exchange of gases between the outside air and the branched system of interconnecting air canals within the leaf. A stomate opens and closes in response to the internal pressure of two sausage-shaped guard cells that surround it.

⁣Phonics involves matching the sounds of spoken English with individual letters or groups of letters. For example, the sound k can be spelled as c, k, ck or ch. Teaching children to blend the sounds of letters together helps them decode unfamiliar or unknown words by sounding them out.

⁣Phonics involves matching the sounds of spoken English with individual letters or groups of letters. For example, the sound k can be spelled as c, k, ck or ch. Teaching children to blend the sounds of letters together helps them decode unfamiliar or unknown words by sounding them out.

⁣Grade 8 English

⁣Grade 8 English

⁣Specialised cells are cells designed to carry out a particular role in the body, such as red blood cells which are designed to carry oxygen. Nerve cells help contraction of muscles or the relaxation of muscles according to what specific job you need them to do.

#PropertiesOfMatter

This video is part of a playlist having the following videos. Watch all of them in sequence for a better learning experience.
Enjoy learning :)

Video no.1 Physical and Chemical Changes-(Part-1)
https://youtu.be/jz0cP_K_CNA

Video no.2 Physical and Chemical Changes-(Part-2)
https://youtu.be/5wMef1nJ1GA

Video no.3 Matter-(Part-1) | States of Matter
https://youtu.be/SYB2MPJ2Il4

Video no.4 Matter-(Part-2) | Properties of different states of matter
https://youtu.be/Hd1AdYdEvhw

Video no.5 Matter-(Part-3)Phase Changes
https://youtu.be/8eqWJyg85B8

Video no.6 Matter-(Part-4) | Properties of matter
https://youtu.be/CqjxAYZ13QA

Video no.7 Matter-(Part-5) | Properties of matter | Science
https://youtu.be/86zB8LuqfEs

• Properties of matter
• Lustre
• Malleability
• Ductility
• Brittle fracture
• Nonductile objects
• Ductile objects
• Hardness
• Texture
I hope you liked our video.
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If we want to learn high-level concepts, we should have a clear understanding of the basic concepts. For instance, if kids don't know about addition and subtraction, they cannot do multiplication, and if they don't know about multiplication, they cannot do division, and if they don't have knowledge of these four basic operations, Algebra cannot be done by them, and it goes on and on.
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⁣Mutations and sexual reproduction increase genetic variation in a population. Natural selection occurs when environmental pressures favor certain traits that are p****ed on to offspring. The “big prize” in natural selection is p****ing on genetic information. Natural selection acts on populations.

⁣The ear is a sensitive organ of the human body. It is mainly concerned with detecting, transmitting and transducing sound.

Kids TV is home to various popular nursery rhymes both new & cl****ic that educate & entertain toddlers. They'll enjoy singing and dancing to our wonderful collection of 3D animation videos including Baby Shark, Johny Johny Yes Papa, Twinkle Twinkle Little Star, Wheels on the Bus, ABC Song, Colors song & many more!

⁣Grade 8 English

In this video you'll learn the basics about Ionic Bonds.

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A real cl****room Biology lesson on the topic of Photosynthesis. British Private Schooling in a Real TV Studio. Part of the SmartLearn Private School at Home series.

Learn everything about Energy in detail with Dr. Binocs.

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Learn about sources of light, light energy, shadows and how light travels.
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<br>Watch this video in Urdu here,

Teaching kids how to be safe while using the internet and computers is of great importance. This Top 10 video illustrates some important things to remember while surfing the web. For more information, visit b4uclick.org.

⁣What is argumentative writing? In argumentative writing, you are typically asked to take a position on an issue or topic and explain and support your position with research from reliable and credible sources.

23 GCSE physics equations song -learn all the equations in one song.
Lyrics and worksheets, plus the chance to become a SUPERFAN
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Lyrics

A car heading for the borderline.
distance travelled = speed × time
s = v t


You want to measure the acceleration?
acceleration=(change in velocity)/(time taken)
a=(Δ v)/t

Try to build the momentum properly.
momentum = m**** × velocity
p = m v

Turn on the speaker. It’s a song from Eminem.
wave speed = frequency × wavelength
v = f λ

Ain’t nobody as ‘phat’ as me.
weight = m**** × gravitational field strength g
W = m g

I use the force in this rap equation.
resultant force = m**** × acceleration
F = m a

pressure=(force normal to a surface)/(area of that surface)
p=F/A

There’s too much density in this whole tune.
density=m****/volume
ρ=m/V

23 Physics Equations.
We’ll take it one by one so have patience.
23 Physics Equations.
We’ll take it one by one so have patience.


A powerful quarterback runs on the touchline.
power=(work done)/time
P=W/t

Or

power=(energy transferred)/time
P=E/t

If we’re talking about transfers, then check this rhyme.
What football transfer would you like to happen, if you had infinite money to buy?
energy transferred = power × time
E = P t

Another way to get energy transferred, this physics equation I’m spitting.
energy transferred = charge flow × potential difference
E = Q V

My bars. I don’t charge at this current time.
charge flow = current × time
Q = I t

If you want to measure the potential difference.
potential difference = current × resistance
V = I R

Two more power equations all of a sudden.
power = potential difference × current
P = V I

Another equation for power. Sit back and listen.
power = (current)2 × resistance
P = I2 R

Chorus

In a factory, putting of a piston.
work done = force × distance along the line of action of the force
W = F s

You want to know the force applied to a spring?
force applied to a spring = spring constant × extension
F = k e

moment of a force = force × distance normal to direction of force
M = F d
The symbol is M = Fd but you knew that of course.


Efficiency is a mission to me but kinetic energy let’s do first.
kinetic energy = 0.5 × m**** × (speed)2
E_k=1/2 m


efficiecy=(useful output energy transfer)/(total input energy transfer)

Or

efficiecy=(total power output)/(total power input)


That’s 22 equations from your physics book.
One more to do before I spit the hook.

gravitational potential energy = m**** × gravitational field strength (g) × height
Ep = m g h
That’s 23 equations done. Good night.