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.

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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

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

In this video, I would like to talk about the cytoplasm of a cell.
The cytoplasm is a fluid found in cells and the organelles suspended within.
Cytoplasm is found in eukaryotic and prokaryotic cells.
The fluid of cytoplasm is called cytosol.
The organelles are found floating in this liquid.
Along with the cytoskeleton, the cytoplasm helps give the cell it’s shape.
Think of filling up a water balloon.
Without cytoplasm, the cell would be deflated and materials would not be able to pass easily from one organelle to another.
In addition, there are important molecules dissolved in the cytosol.
You will find enzymes, glucose, fatty acids, sugars, and amino acids that are used to keep the cell working. Waste products are also dissolved before they are taken in by vacuoles or sent out of the cell.
The cytoplasm is also the site of ATP production through the process of glycolysis when glucose is converted into pyruvate and 2 ATP’s are generated.
In addition, the enzymes found in the cytosol help break down larger molecules.
So there you go, the very important fluid of living cells, the cytoplasm.
Take a journey to the cell
https://www.youtube.com/watch?v=QS274gwv_Sc
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Take a journey into a cell and learn about the cell organelles
https://www.youtube.com/watch?v=3sgSJ44hOEg

Sublimation and Deposition are two types of phase changes. Sublimation is when a solid goes to a liquid and deposition is when a gas goes straight to a solid.
Sublimation and Deposition are phase changes. Sublimation is an endothermic process and deposition is an exothermic process.

Types of Proteins and their function in the human body
Proteins are made up of hundreds or thousands of smaller units called amino acids, which are attached to one another in long chains. Proteins are put together at ribosomes from a blueprint stored in DNA and more specifically from sections of the DNA called genes. There are 20 different types of amino acids that can be combined to make a protein. The order of amino acids determines each protein’s unique shape and its specific function or job.

Let’s take a look at 5 important functions of proteins
Messenger Proteins.
Enzymatic Proteins
Structural Proteins
Defensive Protein
Storage and Transport Proteins

What is the pH scale? The letters pH stand for the potential of hydrogen and is a measure of the concentration of hydrogen ions in a water-based substance?
pH is organized into a scale of acids and bases with neutral. substances right in the middle
The range goes from 0 to 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.
pH is also organized by color. Red usually indicates an acid and blue usually represents a base.
In the video, I cover many pH examples including examples of acids you find around you and examples of bases.

Learn how a Universe is different than a Galaxy which is different than a Solar System
A solar system consists of the objects like planets that revolve around the sun. In also includes small objects like comets and asteroids.
A galaxy is a huge collection of stars that are help together by gravity.
Galaxies contain a huge amount of stars.
The Universe is everything that exists.

Video and some pictures of the Universe
https://en.wikipedia.org/wiki/Universe

Transcript
http://www.moomoomathblog.com/....2020/09/solar-system
Top 7 videos " Scale of the Universe"
http://www.moomoomathblog.com/....2020/10/top-7-videos

Invertebrates make up 97 percent of all animals. In this video, I show a large amount of diversity that invertebrates contain. Invertebrates are animals without an internal skeleton. They can be soft like worms, have a shell like a snail, or have an exoskeleton like insects and spiders.

0:00 Introduction
0:13 Invertebrates
0:50 Starfish
1:17 Porifera
1:31 Annelida
1:45 Arthropods
2:15 Echnoderms
2:34 Cnidarians

What is the Carbon cycle? The carbon cycle is one of several biogeochemical cycles found on Earth. Carbon is found in almost all living organisms and makes up around .04 percent of our atmosphere.
What are the steps of the carbon cycle and how does the Carbon cycle work?
Carbon may travel several paths including,
The atmosphere, the terrestrial biosphere, the earth’s interior which includes the lithosphere, the ocean, and human influence like burning fossil fuels and other objects that store carbon.
In the video, I go through a carbon cycle diagram and explain each step.
Carbon can be found in several forms including carbon dioxide and methane.
The carbon cycle is essential for many ecosystems on Earth.

The Carbon Cycle
https://moomoomath.com/explain-the-carbon-cycle/

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