What is unique about the skeleton of sharks?

• It is made of wood.

• It is made of metal.

• It is made of cartilage, similar to human ears.

• It is made of bones like other fish.

How do sharks maintain buoyancy?

• By floating on the surface.

• By inflating their lungs.

• By constantly swimming.

• By using their fins as wings.

What is the largest species of jellyfish known?

• Immortal jellyfish

• Box jellyfish

• Moon jellyfish

• Lion's mane jellyfish

What percentage of a jellyfish's body is water?

• 70%

• 100%

• 50%

• 95%

What is a unique feature of the immortal jellyfish?

• It can change colors.

• It can revert to a younger state.

• It can live on land.

• It can fly.

How do frogs breathe?

• Only through their lungs.

• Through both lungs and skin.

• Only through their skin.

• Through gills.

What is the process called when a tadpole becomes a frog?

• Metamorphosis

• Regeneration

• Evolution

• Transformation

What is the primary diet of frogs?

• Plants and algae

• Insects and small animals

• Fish and crustaceans

• Fruits and seeds

What is a distinguishing feature of toads compared to frogs?

• Toads have warts on their skin.

• Toads live in water.

• Toads have longer limbs.

• Toads are brightly colored.

What is a major threat to frog populations worldwide?

• Predation by birds

• Competition with reptiles

• Climate change and habitat destruction

• Overfishing