BSB directory BSB Education BSB lectures BSB Mission Patient Earth Germany has many trees with leaves. All changing color in autumn. Why are leaves changing color in fall?
Logo of Bear Springs Blossom Nature Conservation, international charitable nonprofit organization providing nature conservation education to all countries on Earth Signature of Bear Springs Blossom Nature Conservation, international charitable nonprofit organization BSB Environmental conservation education online: Bear Springs Blossom Nature Conservation BSB offers science based nature education on biology. BSB Nature education online: Carbon Dioxide CO2 endangers the climate on earth, humans only home. Plants help with their green to balance the climate, eating carbon dioxide co2 releasing oxygen. Humans breath in oxygen, breath out carbon dioxide CO2. Air, water soil is affected by plants. More humans on Earth need more green, flora and fauna on Earth. Earth's plants made life possible, but humans are destroying trees faster than trees can grow. Bear Springs Blossom Nature Education online shows the beauty of forests, of native plants. Bear Springs Blossom Nature Conservation, protection of all life, flora + fauna on Earth = human protection, conservation of all water on Earth = human protection, conservation of all soil on Earth = human protection. Millions of years earth balanced a natural environment. Conservation of all water on Earth = human protection, conservation of all soil on Earth = human protection through affordable conservation education online to keep nature beautiful. BSB-research + how to keep Nature beautiful + how to secure our future + how to have a better life!
Why to Keep Earth Beautiful
Earth Change

About Us - - - Contact Us - Earth News - Search BSB

Fall Colors - Autumn colors

Bear Springs Blossom Conservation education online: every fall or autumn trees let their leaves fall after humans could enjoy very different fall colors,oak leaves color in red, cherries in yellow, others in brown, fall or autumn has many colors or colours
Isn't it beautiful to see all the colors of autumn leaves?

Why and how do leaves change color in fall?

Why does an oak leaf turn red/brown? Where do the yellows + oranges come from?

Leaves are Nature's great invention.
Plants take water from the ground through their roots.
Leaves take carbon dioxide = CO2 from the air.
Then plants use the sunlight to turn water and carbon dioxide into glucose - a special sugar.
Glucose is food for many living beings, used for energy and as building material to grow.

The process of turning water and carbon dioxide = CO2 into sugar is called
Translated: "putting together with light"

Plants and some animals use
photosynthesis seen on a sunflower, taking the light, producing glukose, leaves and flowers . nature education explains on scientific terms how Nature works - science education
to make photosynthesis happen.
Chlorophyll is what gives plants their green color.

BSB science education Botany: in autumn = fall less light is provided. Chlorophyll disappears and leaves are coloring. showing all the underlaying colors

Light gets shorter as summer ends and autumn comes,
giving a signal to the trees and plants
to prepare for winter.

Photosynthesis needs light.
If there isn't enough trees will rest,
lower their metabolism using the food
stored during the summer.
autumn or fall is beautiful at our Nature preserve. Yellow leaves in autumn at Bear Springs Blossom Nature Preserve where nature education courses explain fall colors
Less light and photosynthesis isn't working -
so the green chlorophyll disappears from the leaves.
As the bright green fades away,
brown, red, yellow and orange colors are shown.
These colors have been in the leaves all year long.
But the green chlorophyll covered them up.

red leaves of Spanish oak at Bear Springs Blossom Nature Preserve where nature education classes explain fall colors
Spanish oak with fall colors

Red and purple coloring is produced in fall
when glucose is trapped in the leaves.
Sunlight and the cool nights of fall
are turning this glucose into a red color.
The brown color of trees is made from wastes left in the leaves.

So, you see there is a wonderful plan for all life on Earth.
For thousands of years humans try to understand these wonders.

Our organization
Bear Springs Blossom
Nature Conservation
provides you with insight, with facts.
Knowledge makes life easier.

Monarch butterflies migrate in fall autumn to Mexico. Butterflies find food during their migration in fall on Evergreen Sumac blossoms at BSB nature preserve
Evergreen Sumac blooming in fall to provide
migrating Monarch butterflies with food

You can send us your questions by email
fall walk on nature trail in the Texas Hill Country fall colored oaks, fall colored cherries

Trails at Bear Springs Blossom
nature education trail at Nature Preserve This is Bear Springs Blossom Main Trail, easy to walk - with many places to rest and enjoy Nature
Big Rock trail North Upper part of our Big Rock Trail - parts are steep
Damianita shrub at Fossil trail Chrysactinia mexicana - Damianita
strongly scented shrub - blooms June to October
Buckeye shrub at loop trail Mexican buckeye loop 
View at Medina lake Great-View-Trail, a wonderful trail,
but you should be fit to walk it 
Chainsaw valley trail Chainsaw valley trail, some people gave
their blood while working on it .. 
Willow canyon trail Black willow trail - just a start
Hill top trail The upper part of our Golden cheeked Warbler habitat - Hill top trail;
oak leaves change colors in fall The lower part of our Golden cheeked Warbler habitats 
Robin singing in late fall A Robin praising Nature  
Madrone blooming in Spring The home of the Madrones is the
TX Hill Country - you can see over 150 at
Bear Springs Blossom
Creekbed trail Every rain changes our Creek bed trail
The creek bed was built by the Pipe Creek a long time ago
big rock trail bench View up to parkbench at Big rock trail
BSB canyon Nature .. protected forever ...
CLICK HERE To go to the wildflower photos
CLICK HERE to go to
Nature education page

Think about and see how wonderful our Earth was created...

Live in Harmony with Nature + learn to understand Nature!

BSB director of education science Biology class online: fall or autumn walk through color changing leaves, resting Nature, fall colors in limestone slopes

Earth News    BSB Education    BSB preserves    Lectures    Help    Join
Keep Earth beautiful
Philosophy education: Does the law of nature change human brains? positively negatively? Learning new topics requires an open mind, knowledge to build on, the ability to ask why, where, how, open to environmental personal responsibility
Nature quiz, earth solar quiz, questions about rivers, quiz about lakes, quiz questions animals - nature trivia
Earth quiz

Quiz about water

Human Body Quiz

Quiz about Blossoms

Bird Quiz

BSB Quizzes

General Knowledge GK

Bird quiz

Environment Quiz

Nature quiz

Recycle quiz

Water Quiz

Ocean Quiz

Quiz Info

Quiz about India

Famous Men Quiz

Earth map, Europe map, India map, Asia map, Africa maps, America maps
Global maps

Maps of Earth

Maps of South America

Maps of North America

Map of Texas

Maps of Europe

Map of Asia

Maps of India

Maps Philippines

Maps of Europe

Map of Oceania

Maps of Africa -

Maps of Texas


Human Inside

Human Teeth

Human blood

Human brain

Human heart

Human skeleton

Humans body Quiz

School lesson Teeth

School lesson organs

Can you see?


Famous Men







Marcus Aurelius

L. da Vinci

Rene Descartes

Thomas Paine

Benjamin Franklin

Thomas Jefferson

James Madison

John Locke

Immanuel Kant

Charles Darwin

Henry Ford

M. Gandhi

Franklin Roosevelt

Eleanore Roosevelt

Louis Pasteur

Marie Curie

B. Disraeli

Margaret Thatcher

Dale Carnegie

Mahatma Gandhi

R. Tagore

Dalai Lama

Albert Einstein

Hermann Hesse

George Orwell's book 1984

Our Earth

- Why Earth has continents?
- Why Earth has earthquakes?
Earth's Geology

Maps of Earth

All about Earth

Global Climate

Climate Change Solutions

Global Warming

Global Dimming

Earth Atmosphere

- Why is Earth sick?
Patient Earth

Save Earth

Life on Earth


Earth Future

Global Issues

How Keep-Earth-Beautiful?

How keep Earth balanced?
BSB Information on Earth:
United States has many shore lines,as have many continents on Earth. Science geography: an updated nature education shows you the big picture, informative speeches explain, provide understanding, giving you a better life
- Astonishing photos from Earth
Earth from Space

Earth's Moon

Our Sun

Earth's solar system

Earth's planets

Info about NASA

Robots in action

Earth's Change

Keep Earth clean

Earth's Oceans

Earth's population

Famous buildings

Glob. statistics

Solar Eclipse

Earth's Spheres

Global Problems:
Global Issues


Pollution solutions

Global warming

Climate Change

Nuclear waste

Ocean currents

Global population

Glob. statistics

Patient Earth


Oil spills

Endangered species

Earth changes

Why Keep Earth

Life is endangered

Air Pollution

Land pollution

Water Pollution

Pollution solutions

Climate Change solutions

Air pollution



Greenhouse Gas

CO2 output

PH power of Hydrogen

Coal burning





Household Waste

Climate Scenario

Energy Facts

Fossil fuels

Energy Sources

Nuclear Energy

Green Electricity

Disposal electr. equipment

Backup Renewable Energy

Electricity Grid

Energy Vampires

Tar sands

Renewable Energy

electric cars


Wind power

Geothermal energy


Fuel cells

Hydro Power

Energy Future

Energy Savers

Nature Education

Guest Lectures


BSB Curriculum

Science teacher

Education views

Quality teaching

School lesson Teeth

School lesson organs

School lesson Water cycle

Why Education?

Conservation Education

Education reasons

Lesson planing

Nature quotes

Famous Men

Master Conservationist

Nature Education Topics

Informative Speeches

BSB Questions


What can we do?



Green driving


Fair Use Notice
All material on 1000+ BSB web-pages is intended to advance understanding of the environmental, social, scientific, and economic issues of Nature conservation. We believe this constitutes a "fair use" of any copyrighted material as provided for in section 107 of the U.S. Copyright Law. In accordance with Title 17 U.S.C. Section 107, the material on this site is distributed without profit to those who have expressed an interest in receiving the included information for research and educational purposes. If you wish to use copyrighted material from our websites for purposes of your own that go beyond "fair use," you must obtain permission from the copyright owner. If you are the owner of copyrighted material(s) appearing on this site, and wish it to be removed, please contact us directly.