Life Science: Ecology & Classification

Understanding Life's Connections Through Two Lenses

Grade 8

About This Workbook: The Dual-View Approach

In this workbook, you'll learn about ecology and biological classification from two perspectives:

What Textbooks Teach (Mainstream View)

This is what most public schools and secular textbooks teach. You need to know this material for standardized tests, but you should also understand its assumptions and limitations.

What Scripture Says (Biblical Truth)

This is what the Bible reveals about Yahuah's creation. Scripture is our ultimate authority, and true science will always align with His Word.

Problems with the Mainstream View

Here we examine evidence that contradicts evolutionary assumptions about common descent and supports the biblical view of created kinds.

"O Yahuah, how manifold are Your works! In wisdom have You made them all: the earth is full of Your riches." - Psalm 104:24

1Introduction to Ecology

Ecology: The study of how living things interact with each other and their environment.
Ecosystem: A community of living organisms (biotic factors) and their physical environment (abiotic factors) functioning together as a unit.

Levels of Ecological Organization

Level Definition Example
Organism A single living thing One deer
Population All organisms of one species in an area All deer in a forest
Community All populations in an area Deer, wolves, trees, birds together
Ecosystem Community + physical environment Forest with all its organisms, soil, water, climate
Biome Large region with similar climate and life Temperate forest biome
Biosphere All life on Earth The entire living planet

What Textbooks Teach

Secular ecology claims:

What Scripture Says

Yahuah designed ecosystems with purpose and wisdom:

Evidence of Designed Ecosystems

"Are not two sparrows sold for a penny? Yet not one of them will fall to the ground outside your Father's care." - Matthew 10:29

Practice

1. Define ecology:

2. Put these in order from smallest to largest: Community, Organism, Ecosystem, Population

1. → 2. → 3. → 4.

3. What is the difference between biotic and abiotic factors?

4. How does ecosystem balance point to design rather than chance?

Family Discussion

2Ecosystems & Biomes

Biome: A large geographic area characterized by its climate, plants, and animals.

Major Terrestrial Biomes

Biome Climate Key Features
Tropical Rainforest Hot, wet year-round Greatest biodiversity; dense vegetation
Desert Very dry; hot or cold Sparse vegetation; specialized organisms
Grassland Moderate rainfall; seasonal Grasses dominate; large herbivores
Temperate Forest Moderate; four seasons Deciduous trees; rich soil
Taiga (Boreal) Cold; long winters Coniferous trees; sparse undergrowth
Tundra Very cold; permafrost No trees; low-growing plants

Aquatic Ecosystems

What Textbooks Teach

Secular scientists claim biomes formed gradually over millions of years:

What Scripture Says

The Bible provides a different timeline:

Biomes Show Design

"He set the earth on its foundations; it can never be moved. You covered it with the deep as with a garment; the waters stood above the mountains." - Psalm 104:5-6

Practice

1. Name the 6 major terrestrial biomes:

2. What biome has the greatest biodiversity?

3. How did the global Flood affect Earth's biomes?

4. Match the biome to its characteristic:

___ TundraA. Hot and wet year-round
___ DesertB. Permafrost, no trees
___ RainforestC. Very dry
___ TaigaD. Coniferous forests

Family Activity

3Food Chains & Energy Flow

Food Chain: A sequence showing how energy and nutrients pass from one organism to another.
Food Web: Multiple interconnected food chains in an ecosystem.

Trophic Levels (Energy Levels)

Level Name Role Example
1st Producers Make own food (photosynthesis) Plants, algae
2nd Primary Consumers Eat producers (herbivores) Rabbits, deer, caterpillars
3rd Secondary Consumers Eat primary consumers Snakes, small birds
4th Tertiary Consumers Top predators Eagles, wolves, lions
All Decomposers Break down dead material Bacteria, fungi, worms

The 10% Rule

Only about 10% of energy transfers from one level to the next. 90% is lost as heat.

🌿 1000 → 🐛 100 → 🐦 10 → 🦅 1

This is why there are more plants than herbivores, and more herbivores than predators!

What Textbooks Teach

What Scripture Says

Death is not "natural" - it's a consequence of sin that Yahusha came to conquer!

Problems with "Circle of Life" Philosophy

"And Elohim said, Behold, I have given you every herb bearing seed... and every tree... for meat: And to every beast of the earth... I have given every green herb for meat." - Genesis 1:29-30

Practice

1. What is the difference between a food chain and a food web?

2. Create a simple food chain with 4 levels:

Producer →

3. According to Genesis 1:30, what did animals originally eat?

4. Why does the 10% rule mean there are fewer predators than herbivores?

5. What event in Genesis introduced death and predation into the world?

Family Discussion

4Classification: Organizing Life

Taxonomy: The science of classifying and naming organisms.
Binomial Nomenclature: The two-part scientific naming system (Genus + species).

Linnaeus: Father of Taxonomy

Carl Linnaeus (1707-1778) was a creationist Christian who developed the classification system still used today. He believed he was "thinking God's thoughts after Him" by organizing creation!

The Classification Hierarchy

Memory Aid: "King Philip Came Over For Good Soup"

Level Human Example Description
KingdomAnimaliaBroadest category
PhylumChordataBody plan type
ClassMammaliaMajor group features
OrderPrimatesMore specific group
FamilyHominidaeClose relatives
GenusHomoVery close relatives
SpeciessapiensMost specific - can interbreed

What Textbooks Teach

What Scripture Says

Evidence for Created Kinds

Example: Dogs, wolves, coyotes, and jackals - all one created kind (Canidae) with incredible variety, but they never become cats!

"And Elohim made the beast of the earth after his kind, and cattle after their kind, and every thing that creeps upon the earth after his kind: and Elohim saw that it was good." - Genesis 1:25

Practice

1. Who developed the modern classification system? Was he a creationist?

2. Put these in order from broadest to most specific: Family, Kingdom, Species, Class

1. → 2. → 3. → 4.

3. What is binomial nomenclature?

4. Why do creationists believe similar features show a common Designer rather than common ancestry?

Family Activity

5Common Descent vs Created Kinds

This is the central debate between evolutionary biology and biblical creation. Let's examine both views carefully.

Evolutionary View: Common Descent

Claim: All life on Earth descended from a single common ancestor over billions of years.

Evidence cited: Homologous structures, DNA similarities, fossil record, embryo similarities

Biblical View: Created Kinds

Truth: Yahuah created distinct "kinds" (Hebrew: baramin) that reproduce only within their kind.

Evidence: No transitional fossils, limits to variation, irreducible complexity, genetic entropy

Serious Problems with Common Descent

1. The Cambrian Explosion

2. Irreducible Complexity

3. Genetic Entropy

4. No Observed Macroevolution

The Orchard vs. the Tree

Two Models of Life's History

Evolution's "Tree of Life"

🌳

All life from one ancestor
Gradual branching

Creation's "Orchard"

🌲🌳🌴🌵

Many separate created kinds
Variation within kinds

The orchard model matches what we observe: dogs vary into many breeds but remain dogs. There are no transitional forms between major groups.

"For by Him were all things created, that are in heaven, and that are in earth, visible and invisible... all things were created by Him, and for Him." - Colossians 1:16

Practice

1. What does "common descent" mean?

2. What is a "created kind" (baramin)?

3. What is the Cambrian Explosion, and why is it a problem for evolution?

4. Explain the difference between the "tree of life" and the "orchard" model:

5. Why does DNA similarity NOT prove common ancestry?

Family Discussion

6Population & Community Ecology

Population: All members of a species living in the same area.

Population Characteristics

Population Growth Factors

Increase Population Decrease Population
Births (natality) Deaths (mortality)
Immigration (moving in) Emigration (moving out)
Abundant resources Limited resources
Few predators Many predators/disease
Carrying Capacity (K): The maximum population an environment can sustain long-term.

Species Interactions in Communities

Interaction Species A Species B Example
Predation Benefits (+) Harmed (−) Lion eats zebra
Competition Harmed (−) Harmed (−) Two plants competing for light
Mutualism Benefits (+) Benefits (+) Bee and flower
Commensalism Benefits (+) Neutral (0) Barnacle on whale
Parasitism Benefits (+) Harmed (−) Tick on dog

What Textbooks Teach

What Scripture Says

Mutualism: Evidence of Design

Many mutualistic relationships are so precise they couldn't have evolved gradually:

"And He is before all things, and by Him all things consist [hold together]." - Colossians 1:17

Practice

1. What four factors affect population size?

2. Define carrying capacity:

3. Match the interaction type:

___ Bee pollinates flowerA. Predation
___ Tick feeds on dogB. Mutualism
___ Lion hunts zebraC. Competition
___ Trees compete for sunlightD. Parasitism

4. Why do mutualistic relationships suggest design rather than evolution?

Family Activity

7Human Impact & Biblical Stewardship

Ways Humans Impact Ecosystems

Impact Description Effects
Habitat Destruction Removing natural areas for development Species lose homes, extinction risk
Pollution Adding harmful substances to environment Air, water, soil contamination
Overexploitation Taking more than ecosystems can replace Overfishing, deforestation
Invasive Species Introducing non-native organisms Outcompete native species
Climate Effects Changes affecting weather patterns Ecosystem disruption

What Mainstream Environmentalism Teaches

Note: Some of these ideas have roots in evolutionary thinking that devalues human uniqueness.

What Scripture Says: Biblical Stewardship

Balance: Not Worship, Not Abuse

Extreme 1: Earth Worship Biblical Balance Extreme 2: Earth Abuse
Nature has ultimate value Nature has value because Yahuah made it Nature exists only to exploit
Humans are the problem Humans are responsible stewards Humans have no responsibility
Population control Be fruitful and multiply wisely Reckless consumption
"Mother Earth" spirituality Worship Creator, not creation No gratitude to Creator

Warning About Environmental Extremism

True stewardship comes from love for Yahuah and His creation, not fear or worship of nature.

"The earth is Yahuah's, and the fullness thereof; the world, and they that dwell therein." - Psalm 24:1

Practice

1. What does "dominion" mean in Genesis 1:28?

2. What's the difference between stewardship and ownership?

3. Name three ways humans negatively impact ecosystems:

4. Why is worshiping "Mother Earth" wrong according to Scripture?

5. How can you practice biblical stewardship in your daily life?

Family Activity

8Review: Ecology & Classification Point to the Creator

Key Truths We've Learned

Summary of Biblical View

  1. Ecosystems show design - intricate balance reflects Yahuah's wisdom
  2. Biomes formed after the Flood - not over millions of years
  3. Original creation was vegetarian - death came through sin
  4. Classification reveals created kinds - not evolutionary ancestry
  5. Common ancestry is false - the "orchard" model fits evidence
  6. Mutualism shows design - relationships too complex to evolve
  7. We are stewards, not owners - care for creation without worshiping it

What Mainstream Science Cannot Explain

The answer: "In the beginning, Elohim created..." (Genesis 1:1)

"For since the creation of the world His invisible attributes are clearly seen, being understood by the things that are made, even His eternal power and divine nature, so that they are without excuse." - Romans 1:20

Final Assessment

1. Define ecosystem and name its two main components:

2. Name the 6 major biomes:

3. What was the original diet of all creatures according to Genesis?

4. List the 7 levels of classification in order:

5. Explain the difference between the evolutionary "tree of life" and the creationist "orchard" model:

6. What is a created kind (baramin), and why does it matter?

7. What is biblical stewardship, and how does it differ from secular environmentalism?

8. Write a paragraph explaining how ecology and classification point to Yahuah as Creator:

Celebration!

Answer Key

Lesson 1

1. Ecology: The study of how living things interact with each other and their environment

2. Organism → Population → Community → Ecosystem

3. Biotic = living things; Abiotic = non-living things (water, temperature, soil, etc.)

Lesson 2

1. Tropical Rainforest, Desert, Grassland, Temperate Forest, Taiga, Tundra

2. Tropical Rainforest

4. Matching: B, C, A, D

Lesson 3

3. Plants/herbs (vegetarian)

5. The Fall (sin entering the world)

Lesson 4

1. Carl Linnaeus; Yes, he was a creationist

2. Kingdom → Class → Family → Species

Lesson 5

1. All life descended from a single common ancestor

2. A distinct group of organisms created by Yahuah that reproduce within their kind

Lesson 6

1. Births, deaths, immigration, emigration

2. Maximum population an environment can sustain long-term

3. Matching: B, D, A, C

Lesson 7

1. Responsible rule over creation as Yahuah's representatives

3. Any three: habitat destruction, pollution, overexploitation, invasive species, climate effects

Lesson 8

3. Plants/herbs (vegetarian)

4. Kingdom, Phylum, Class, Order, Family, Genus, Species