Let's go through the different levels of Biological organization. I start at the organism and finish at the Biosphere. However, the smallest level of life is a cell. Cells can combine to make tissues, which may combine to make an organ, and a group of organs may make an organ system.

An organism refers to a living thing that has an organized structure, can react to stimuli, reproduce, requires energy plus grows and adapts
Examples include animals, plants, fungi, protists, and many, many more.

Whenever you get a group of the same type of individuals together, like this group of Penguins or these wolves, and horses, or plants you have a population. The organisms are all of the same species.

If you have several different populations living together you have a community.
A community does not include the non-living factors also called abiotic factors.

An ecosystem is a community of living factors called biotic factors and non-living factors called abiotic factors interacting and living together.
A desert can be an ecosystem.
A forest can be an ecosystem.
A pond is an ecosystem,and even a rotting log can even be an ecosystem.
An ecosystem is a community of living and non-living objects living together in a particular area.

A Biome is a large ecosystem that has formed in response to the physical environment[1] in which they are found and a shared regional climate. Examples include a desert, tropical rainforest, and a deciduous forest.
The Biosphere is part of the earth where life exists. It is the sum of all the ecosystems on Earth.

Transcript
http://www.moomoomathblog.com/....2023/03/levels-of-bi

An introduction to three gas laws. I cover Boyle's law,charles's law, and Gay Lussac's.
For each law I cover the constant, what the law states, the formula, and the density.

00:00 Introduction to Gas Laws
00:20 Boyle's Law explanation
01:07 Charles's Law
01:53 Gay Lussac's law or pressure temperature law

Learn why we have sea and land breezes. Almost anytime you go to the beach you will encounter some wind. This is because of the land and water heating up and cooling off at different rates.
Land warms up and cools off more quickly than water. Warm air creates a low-pressure area and cold air creates a high-pressure area. Air will always flow from high pressure to low pressure and this will generate wind.

Learn about the four Spheres of the earth.
The earth can be divided into four major spheres.
The biosphere which means life.
The hydrosphere which makes up all the water of the earth
The atmosphere which is the air of the earth
The geosphere which is all of the rocks, soil, and layers of the earth.

These four spheres of the earth allow life to exist on planet earth
You may enjoy ....
Layers of the Earth
https://youtu.be/bJV5KHbghcQ

The 4 Spheres of the Earth
https://moomoomath.com/4-spheres-of-earth/

Examples of Deposition-Barrier Island-River Delta-Salt Marsh
https://youtu.be/7s75rHST0p4

Learn the difference between physical and chemical changes by observing real life examples.
Is mentos and diet cke a physical or chemical change? Actually it is a phase change so it is a physical change.
I include other example like breaking a piggy bank, fireworks, cutting hair and several other examples. The goal is to help you undertand the difference between a physical and chemcal change by looking at examples.

More on Physical and Chemical Changes
http://www.moomoomathblog.com/....2017/03/physical-and

Describe Nitrogen Cycle-Nitrogen cycle in simple terms

We can not just breathe in nitrogen and use it in our body like oxygen.
Instead, we must get our nitrogen from the food we eat.
Fortunately, we have bacteria that help recycle this nitrogen and put the nitrogen into a form we can use and ensures we won't run out of nitrogen.
Key Terms: Denitrification, nitrogen fixation, ammonification, nitrite, nitrate

Nitrogen Cycle
http://www.moomoomath.com/nitrogen-cycle.html

Nitrogen Cycle ,Nitrogen Fixation - Explanation in animation
https://www.youtube.com/watch?v=ZaFVfHftzpI&t=146s

Biogeochemical Cycles
https://www.youtube.com/watch?v=Bn41lXKyVWQ

Biogeochemical Cycles
https://moomoomath.com/how-the....-earth-recycles-elem

For more Life Science videos
https://moomoomath.com/category/science-videos/

Learn the difference between potential energy which is stored energy and kinetic energy which is the energy of motion. In this video, I compare gravitational potential energy to kinetic energy. I also review the formula for potential energy and the formula for kinetic energy.

For more Math help visit our website
http://www.moomoomath.com/

Potential Kinetic Energy
https://moomoomath.com/potenti....al-energy-vs-kinetic

The cell membrane surrounds the cell and protects the cell, communicates with other cells, and controls what enters and exits the cell.
The cell membrane is made of phospholipids which have a polar and nonpolar end.
The cell membrane also has proteins and carbohydrates.
In this video, I cover what the cell membrane is made of and the structure and function of the cell membrane.

Learn how to code from DNA to mRNA to tRNA to amino acids.DNA is made up of four bases Adenine Cytosine Guanine and Thymine
Let's shorten this to ACG and T
A pairs with T and G pairs with C
So if we have this strand. It moves from 5 to 3
For a complementary strand, you will have
a will pair with t, t with a g with c and you can watch the rest.
Now messenger RNA is similar to DNA but instead of thymine, you will have uracil.
After decoding the mRNA and tRNA you can use an amino acid chart and find the correct amino acid.

At 2:21 I mislabel tRNA. Sorry for the mistake. Here is an updated video correcting the mistake.
https://www.youtube.com/watch?v=pAPuSxMxugA

Annelida Phylum
Learn facts and characteristics about this phylum that includes the earthworm. This phylum of segmented worms is famous for their segmented bodies. In addition, these worms have a nervous system, a digestive tract, and are found all over the world.
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For more Life Science videos and summaries see,
http://www.moomoomath.com/Midd....le-School-Science-an

You may also enjoy my other video on Osmosis
https://www.youtube.com/watch?v=XRl_QBUVwaA

In this video, I would like to show some examples of diffusion.
Diffusion is when objects move from an area of high concentration to an area of low concentration.
Check out this example, of diffusion.
You can another simple example of diffusion when you watch the food coloring diffuse into the water.
If you take an egg and soak it in vinegar and then place it in water, the water will diffuse into the egg causing it to get larger.
If you place sugar into coffee it will diffuse out into the coffee.
Watering plants diffuses the water into the plants
When you go into Starbucks and smell the coffee smell the smell of the coffee has diffused through out the coffee shop.
You can soak a gummy bear in water and the water will diffuse into the gummy bear. and it will get larger.
Those are several examples of diffusion.
When objects move from high concentration to low concentration.
Thanks for watching and MooMooMath and Science uploads a new Math and Science video everyday.

Additional Resources on Diffusion
Diffusion
https://www.biologycorner.com/....bio1/notes_diffusion

Diffusion BrainPop
https://www.brainpop.com/scien....ce/cellularlifeandge

Skittles Diffusion
https://www.brainpop.com/scien....ce/cellularlifeandge
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Please watch: "Study Skills Teacher's Secret Guide to your Best Grades"
https://www.youtube.com/watch?v=f3bsg8gaSbw
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For more Life Science videos and summaries see,
http://www.moomoomath.com/Midd....le-School-Science-an

What is a ribosome? A ribosome is an organelle found in plant, animal, and bacteria cells.
They are very small yet very important because they make proteins. Ribosomes use a process called translation to make proteins.

If you would like to learn more about proteins and their importance this video will help.
https://youtu.be/V_E7mq8bv4g

Transcript
https://youtu.be/pkKjDq2ATck

Pathway of Air Flow
Our journey of oxygen into the lungs and back begins when the brain stem sends a message to the diaphragm which is a muscle under the lungs.
As the diaphragm moves down the lungs expand.

Air enters the nose and mouth and enters the nasal passages.
Your nose and nasal passages have tiny hairs called cilia and mucus that help filter dirt and pollen out of the air.
The air next moves to the pharynx which is located at (the back of the mouth)
From the pharynx, it moves to the larynx which is commonly called the voice box.
the voice box (makes sounds when air
passes over the vocal cords)
Epiglottis: the flap of connective tissue that covers
over the larynx during breathing
It stands open during breathing, allowing air into the larynx. During swallowing, it closes to prevent choking on food

From the larynx, air travels to the Trachea which is a rigid tube made of cartilage.
The trachea leads into two tubes called the left and right bronchus
These tubes continue to branch until you reach a tiny air sac called a alveoli
At the alveoli, oxygen diffuses into the capillaries and carbon dioxide diffuse into the alveoli and is exhaled.
This process is repeated over and over again.
Updated Version
https://youtu.be/k-BkmhLD42U

A simple test to see if a number is prime or composite. All you do is find the square root of the number. Next, find all the prime numbers of this number. If none of these prime numbers are a factor of the number then the number is prime.

Equivalent Fractions look different but measure the same thing! I place several equivalent fractions on a number line in order to help you see that they measure the same things. Remember, a fraction measures parts of a whole.

The structure and function of the small intestines. This coiled organ which is part of the digestive system is found roughly behind your belly button.
How large is the small intestine? About 22 or 23 feet long.
The intestines are divided into 3 parts. The duodenum, the jejunum, and the ileum
The small intestines also contain hairlike projections called villi that help absorb nutrients

Learn how biogeochemical cycles work. Important elements along with molecules like water are conserved by moving between living factors called biotic factors and abiotic factors which are nonliving factors. You can remember the elements that have biogeochemical cycles using CHNOPS
Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur.
Each of these elements has its own unique cycle and path from biotic and abiotic factors.

Biogeochemical Cycles
https://moomoomath.com/how-the....-earth-recycles-elem

Macromolecules are large molecules that help keep the cell alive. What are macromolecules? You may also hear the term biomolecules to describe these large molecules
Cells of animals and most living organisms have four main macromolecules that help keep their cells alive and functioning properly.
The four main macromolecules are carbohydrates, proteins, lipids, and nucleic acids.
Transcript
http://www.moomoomathblog.com/....2020/07/beginners-gu

Protein synthesis in simple terms. I cover the steps of transcription and translation. The overall process involves DNA unzipping when RNA polymerase attaches and a strand of RNA is created. Rna is different than DNA because it contains the base Uracil instead of Thymine. This step is called transcription.
I next show the difference between transcription and translation by showing how the mRNA leaves the nucleus and attaches to a ribosome.
At the ribosome codons and anticodons put the amino acids together in the correct order to form the protein.

Translation Practice
https://youtu.be/_t1f1vRnCEo

Learn what a box and whisker plot tells you.