Igneous Rocks are created from molten rock that is either on the surface (lava) or inside the Earth ( magma)

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.

10 Mutualism Examples

Mutualism is a symbiotic relationship in which both organisms involved in the relationship benefits from the relationship.
In this video, I introduce 10 examples of symbiotic relationships that are mutualistic.
Examples include,
clownfish and sea anemone,
termites and flagellates,
oxpecker,
pistol shrimp and goby,
bee and plants
acacia plant and ants
spider crab and algae

Symbiotic Relationships
https://youtu.be/uO_MXis2uRk

Symbiotic Plants
https://youtu.be/sjB1vbHUw64

Mutualism Examples
https://moomoomath.com/10-mutualism-examples/

Polygon Names
Learn to memorize the names of polygons.
In this video, I cover, triangle, quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, decagon

For more on polygon names see ..
https://moomoomath.com/names-of-polygons/

Phylum Cnidaria This phylum is famous for having stinging cells. Jellyfish and sea anemones are phylum cnidaria examples.
Phylum cnidaria characteristics include stinging cells, symmetry, and are all invertebrates.
Keywords: cnidaria biology sponge porifera 15
evolution animalia species
anemone coral polyp medusa
jellies stinging animals
classification cnidarian
You may also enjoy..

The phylum cnidaria
https://www.youtube.com/watch?v=AjM-WOeM3uA

Cnidarian classification
https://www.youtube.com/watch?v=f4h77EptlW4

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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

Many times mass and weight are used to describe the same thing. However, these two measurements are different. In this video, I explain the difference between mass and weight.
Mass is a measure of how much matter something contains, which equals the number of atoms in it
Weight is a measure of how strongly gravity pulls on something

The SI unit for mass is kilograms
The SI unit for weight is the newton N
Transcript
http://www.moomoomathblog.com/....2020/12/difference-b

Sedimentary Rocks are rocks formed from rock fragments and organic matter.

Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface or under the ocean. The particles that form a sedimentary rock are called sediment and may be composed of minerals or organic matter.
The following rocks are sedimentary Rocks
Shale, Conglomerate, Limestone, Sandstone

Rock Cycle
http://www.moomoomathblog.com/....2020/04/rock-cycle-d

Soil horizon and profile explained.
Soil is essential for many activities like plants growing and much of the food we eat.
In this video, I cover the difference between soil profile and horizon and review the characteristics of horizons O A E B C R
o = litter
b = topsoil
e = eluviated
b = subsoil
c = parent material
r = bedrock

Examples of parasitism

This innocent looking bird called a cowbird lays her eggs in another birds nest and expects the unsuspecting mom to raise their young. If this bird kicks her eggs out of the nest the cowbird may destroy her nest. This is just one example of parasitism.

Parasitism is a symbiotic relationship in which one organism benefits and another organism is harmed and in some cases may die.
Let’s take a look at examples

Mosquitoes These annoying pests will show up at most picnics and start trying to have a meal at your expense. mosquitoes are carriers, or vectors, for some of humanity’s most deadly illnesses, and they are public enemy number one in the fight against global infectious disease. Mosquito-borne diseases cause millions of deaths worldwide
In a similar fashion, ticks will do the same to you, dogs, livestock. The latch on to their host and start eating. Ticks can infect their host with many diseases including Lyme disease.

Many worms are parasitic.
Leech
A leech is a segmented worm that attaches to a host like you and gets a meal from their blood. They secrete a chemical that actually prevents the blood from clotting.
If present in great numbers on a host, these can be debilitating, and in extreme cases, cause death.

E. coli
There are hundreds of different types, or strains, of the bacteria E. coli (Escherichia coli). Most of these are harmless and live in the intestines of healthy people and animals. But some strains of E. coli make a strong toxin that can cause a severe infection.

Mistletoe This plant you will see high in trees is actually a parasite. Mistletoe will attach to their host tree or shrub and then extract water and nutrients from the host plant.

Albino redweed
An 'albino' redwood is a redwood tree whi....ch is unable to prod and http://www.cpp.usmc.mil/base/e....nvironmental/inrmp/A

Mistletoe
Photograph © Andrew Dunn, 26 December 2004.
Website: http://www.andrewdunnphoto.com/

Albino Redwood
https://commons.wikimedia.org/....wiki/File:Humboldt_R

Parasitoid Wasp
Title: Neoneurus vesculus ovipositing in workers of the ant Formica cunicularia.ogv
Author: Cees van Achterberg, José María Durán
Date: 29 November 2011

Learn howexercise benefits your body.
Exercise helps your brain, helps on the cellular level, the respiratory, and your circulatory system.

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

Use the formula 1/3 pi radius squared times height in order to find the volume of a cone.
You can think of volume as how much ice cream you can place inside the cone.

Additional Volume of a Cone Examples
https://youtu.be/3EqKNHdu2ZY

Learn how to add and subtract expressions.
For more Math help visit our website
http://www.moomoomath.com/

What are the three domains of life? All organisms found on Earth can be divided into three domains titled bacteria, archaea, and eukarya. In this video, I compare and contrast the three domains used in the modern classification system.

You may enjoy... Characteristics of Life
https://youtu.be/M0jUd73feh4

Bacteria-- Parts of a bacteria cell
A bacteria cell is classified as a prokaryotic cell because it does not have a nucleus or membrane-bound organelles.
A bacteria cell does have genetic material, but it is not organized in a nucleus.

You may also enjoy ...
https://moomoomath.com/bacteria-cell-structure/

How is a gene different than an allele?
A gene is a portion of DNA that codes for a trait.
An allele is the different form of the same trait
0:00 Introduction Gene vs Allele
0:35 Definition of a gene
0:53 Definition of a trait
1:02 Traits of pea plants
1:18 Definition of an allele
1:52 Difference between dominant and recessive allele
Transcript
http://www.moomoomathblog.com/....2021/12/alleles-vs-g

What is a kite in Geometry?
A kite has four sides, therefore it is a Quadrilateral
One of the first things you may notice is that there are two pairs of different-length sides.
The perimeter of a kite is found by adding the length of all four sides.
You can find the area by using the diagonals of the kite. A kite has one diagonal that is longer than the other diagonal.
More Information
http://www.moomoomath.com/defi....nition-of-kite-in-ge
What is a trapezoid?
https://youtube.com/shorts/p07jemRHOio

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

Transparent material allows visible light to pass through it. Some of the light may be absorbed, but it is possible to see objects through the material.
Translucent materials allow some light through them but it is scattered so it is impossible to see a clear image through the material.
Opaque materials don't let light through them at all. The light is either reflected or absorbed.
Transcript
http://www.moomoomathblog.com/....2020/08/transparent-

A rate is a comparison of two quantities that have different units.
A unit rate is a type of rate that has a denominator of 1

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

Definition Unit Rate Short
https://youtube.com/shorts/HMGl28vc7ew

Learn common characteristics of birds. Birds are vertebrates that have feathers, a four chamber heart, a beak, wings, and are endothermic.

Bird Characteristic Blog post
http://www.moomoomathblog.com/....2022/04/bird-charact