๐ŸŒฟ Unit 3: Living Things and their Environment
Unit 3
Living Things and their Environment

All living and non-living things are linked together. Living things depend on non-living things such as sunlight, soil, water, and air to grow and survive. Green plants make their own food by using the sun's energy. Animals receive this energy when they consume plants.

โ˜€๏ธ ๐ŸŒง๏ธ ๐ŸŒฑ ๐Ÿ‘ฆ

Living things depend on sunlight, water, air, and soil

Some animals eat plants. These animals are called herbivores. Sheep, cows, and rabbits are herbivores.

๐Ÿ‡ Rabbit (Herbivore)
๐Ÿ„ Cow (Herbivore)
๐Ÿ‘ Sheep (Herbivore)
๐ŸŽฎ Interactive Lab: Give Non-Living Needs to Grow Plant & Feed Herbivores!

Step 1: Click all 4 non-living things so the green plant can make food. Step 2: Feed the herbivore!

Unit 3
Carnivores and Omnivores

Some animals eat other animals' meat. They are called carnivores. Lions, tigers, foxes, and dogs are carnivores.

๐ŸฆŠ Fox (Carnivore)
๐Ÿฆ ๐Ÿฏ Lions & Tigers (Carnivores)

Human beings and some animals eat both plants and animals. They are called omnivores.

๐Ÿ• Dogs
๐Ÿฆโ€โฌ› Crow / Bird (Omnivore)
๐Ÿง’๐Ÿฅ—๐Ÿ— Human Beings (Omnivores)
๐ŸŽฎ Diet Classifier Challenge: Herbivore, Carnivore, or Omnivore?
๐Ÿฆ

Lion (Eats meat only)

Food energy passes from plants to animals in the form of a long chain. This is called the food chain.

๐Ÿฅ• Carrots (Plant)
Makes food from Sun
โฌ…๏ธ food / energy โฌ…๏ธ
๐Ÿ‡ Rabbit (Herbivore)
Eats carrots
โฌ…๏ธ food / energy โฌ…๏ธ
๐Ÿฆ… Hawk / Eagle (Carnivore)
Eats the rabbit

When plants and animals die, all the chemical substances in their bodies return to the soil.

๐Ÿ”„ Interactive Food Cycle Simulator
๐ŸŒฟ

Step 1: Green Plants Grow in Soil

Unit 3
Bacteria & Food Web

There are millions of tiny living things in the soil. These tiny living things are called bacteria. Bacteria feeds on dead animals and plants. They break them down into tiny particles which mix with the soil. Plants repeat the cycle by absorbing these particles to make their food.

๐Ÿ”ฌ๐Ÿฆ  Microscopic Bacteria in Soil

A food web consists of all the food chains. Each living thing is part of multiple food chains. All of the interconnected and overlapping food chains make up a food web.

๐Ÿ•ธ๏ธ Interactive Food Web Explorer (Click any living thing to see its connections!)

All living things grow and change. When an animal or plant changes to fit its surroundings, we say it has adapted to its surroundings. The special body parts that a plant or animal develops to adapt to a particular place or living condition are called adaptations.

Animals are designed or adapted to live in their environment.
โ€ข A tiger, for example, has sharp claws and teeth for tearing flesh.
โ€ข A deer has horns for stabbing.
โ€ข A mountain goat has hoofs for kicking and climbing rocks.
โ€ข An eagle has a sharp beak and claws for catching mice and rabbits.

๐Ÿ…
A tiger has sharp claws and teeth.
๐ŸฆŒ
A deer has horns.
๐Ÿโ›ฐ๏ธ
A mountain goat has hoofs.
๐Ÿฆ…
An eagle has a sharp beak.
๐ŸŽฎ Adaptation Action Tester (Click an animal card above or button below!)
Unit 3
More Animal Adaptations

โ€ข A chameleon changes colour so that it can blend in with its surroundings.
โ€ข A bird has wings to fly.
โ€ข A fish swims in water with its fins and tail.

๐Ÿ•Š๏ธ A seagull flies with its wings.
๐ŸฆŽ A chameleon changes colour.
๐Ÿ  A fish swims with its fins and tail.
๐ŸŽจ Chameleon Camouflage & Movement Simulator

Change the chameleon's surroundings or test how birds and fish move:

The beak of a humming bird is adapted for taking nectar from deep inside a flower.

๐Ÿฆ๐ŸŒบ A humming bird sipping nectar.

Animals that live in very cold places, like polar bears, seals, and whales, have thick fur on their bodies. They have a thick layer of fat under their skins.

๐Ÿปโ€โ„๏ธโ„๏ธ๐Ÿฆญ๐Ÿ‹ A white polar bear.
โ„๏ธ Cold Arctic Thermal Inspector & Hummingbird Feeder
Unit 3
Hot Places & Plant Adaptations

Most animals that live in very hot places, like camels, lizards, and snakes, rest during the day and look for food at night. They can store water in their bodies for a long time.

๐Ÿช๐Ÿœ๏ธ Camels store water in their bodies
๐Ÿ๐ŸฆŽ Snakes & Lizards rest by day, hunt at night

Plants that grow in very cold places have needle-like leaves. They make seeds inside cones. While plants that grow in very hot places have thick, fleshy stems that can store water. Their leaves are very small, and they have very deep roots. They have hard, waxy coats and thorns for protection.

๐ŸŒต Hot Place Plant: Thick fleshy stem, deep roots, waxy coat & thorns
๐ŸŒฒ๐ŸŒฐ Cold Place Plant: Needle-like leaves & seeds inside cones
๐ŸŒž๐ŸŒ™ Desert Day/Night Switcher & Plant Adaptation Lab
๐Ÿ’ก Teacher Mode (Page 27): Click on any question or statement to show the answer. Click it again to hide it!
Exercises
1. Answer the following questions.
(a) Where does all the food in the world come from?
It comes from green plants (which make food using the sun's energy).
(b) How is the energy from the sun passed on to animals?
Green plants use the sun's energy to make food, and animals receive it when they eat plants.
(c) What is a food chain?
Food energy passing from plants to animals in the form of a long chain.
(d) What happens to the bodies of dead plants and animals in the soil?
All chemical substances return to the soil, where bacteria break them down into tiny particles.
(e) What are adaptations?
Special body parts that a plant or animal develops to adapt to its surroundings.
(f) How are animals that live in very cold places adapted to live there?
They have thick fur on their bodies and a thick layer of fat under their skins.
2. Fill in the blanks to complete the statements.
(a) Living things are linked to other living things as well as the non-living things of the world.
(b) Plants get energy from the sun to make their food.
(c) Animals that eat plants are called herbivores .
(d) Animals that eat other animals are called carnivores .
(e) Omnivores eat both plants and animals.
(f) Tiny living things in the soil are called bacteria .
(g) When a living thing grows and changes to fit its surroundings, we say it has adapted .
(h) The surroundings of an animal or plant is called its environment .
๐Ÿ’ก Teacher Mode (Page 28): Click on any question, animal row, or drawing area to toggle its answer!
Unit 3
(i) Plants that grow in very cold places have needle-like leaves.
(j) Plants that grow in very hot places have thick , fleshy stems which can store water.
3. Match the animals to their adaptations.

(Click on each animal (a), (b), (c), or (d) to show/hide its matching line)

Animals
(a) tiger โž” sharp claws and teeth
(b) deer โž” horns
(c) mountain goat โž” hoofs
(d) eagle โž” sharp claws and beak
Adaptations
sharp claws and beak
hoofs
sharp claws and teeth
horns
4. (a) Draw:

(i) a food chain and (ii) a food web form the following:
Grasshopper, fox, bird, snake, hawk, green plants, frog, insects, rabbit.

(i) A Food Chain: (Click here to show/hide the Food Chain answer)
๐ŸŒฟ Green plants  โž”  ๐Ÿ‡ Rabbit  โž”  ๐ŸฆŠ Fox
(Or: ๐ŸŒฟ Green plants โž” ๐Ÿฆ— Grasshopper โž” ๐Ÿธ Frog โž” ๐Ÿ Snake โž” ๐Ÿฆ… Hawk)
(ii) A Food Web: (Click here to show/hide the Food Web diagram)
๐Ÿฆ… Hawk        ๐ŸฆŠ Fox
โฌ†๏ธ      โฌ†๏ธ        โฌ†๏ธ
๐Ÿ Snake  โฌ…๏ธ  ๐Ÿธ Frog   |   ๐Ÿฆ Bird   |   ๐Ÿ‡ Rabbit
โฌ†๏ธ              โฌ†๏ธ              โฌ†๏ธ
๐Ÿฆ— Grasshopper       ๐Ÿชฒ Insects       ๐Ÿ‡ Rabbit
โฌ†๏ธ              โฌ†๏ธ              โฌ†๏ธ
๐ŸŒฟ Green plants (Producer at the bottom of all chains)
(b) Pick out animals that fall in these categories from the food chain above:
(i) a herbivore
rabbit / grasshopper
(ii) a carnivore
fox / snake / hawk / frog
(iii) an omnivore
bird