Rats are medium-sized _ with a long tail.
What is rodents!
The largest living bird in the world.
What is the ostrich!
The human skull is made up of 29 different _.
What is bones!
Plants that aren't quite tall enough to be considered trees are often called _.
What is shrubs!
Spring is one of the four _.
What is seasons!
Rats are easy to _ in a similar way to dogs.

What is train!
Birds have feathers, wings, lay eggs and are _ blooded.

What is warm!
Your left lung is about 10 percent _ than your right one.
What is smaller!
Tree rings can predict not only age, but also _.
What is climate change!
These mean spring in Japan.
What is cherry blossoms!
Rats’ super-strong _ never stop growing!
What is teeth!
The most common species of bird found in the world.
What is the chicken!
Human teeth are just as strong as _ teeth.
What is shark!
Based on fossil evidence, trees have been on our planet for at least the last _ million years.
What is 370!
The first day of spring is the called the _.
What is vernal equinox!
Name for a group of rats.
What is a ‘mischief’!
Birds have _ bones which help them fly.
What is hollow!
Babies don’t shed these until they’re at least one month old.
What is tears!
Prometheus, a Great Basin bristlecone pine (Pinus longaeva) was found in Wheeler Park in Nevada, USA, North America, and was estimated to be over _ years old.
What is 4,800!
Before the 14th century, spring was called this in Old English.
What is ‘Lent’!
Rats _, but we can’t hear it.

What is laugh/giggle!
Some bird species are intelligent enough to create and use these.

What is tools!
Humans are the only species known to do this.

What is blush!
A coast redwood (Sequoia sempervirens) tree found in the Redwood National and State Parks in California, USA, North America is the world’s tallest tree with a height of 380.1 feet.
What is Hyperion!
The Greek goddess of spring.
What/Who is Persephone!