A biome is a community of plants and animals that have common characteristics for the environment they exist in.

Which biome occupies 7% of the planet's land surface, but is home to half of all land-based species?

'When a female lays an egg she passes it to the male. The male keeps the egg warm by balancing it on top of his feet, using a flap of skin to cover it'.

Which species is being described?

Coral bleaching is the name for what happens when the tiny animals that live inside the coral die, causing the coral to turn white.

What is the main cause of coral bleaching?

A critically endangered species is one that is facing an extremely high risk of extinction in the wild.

Which one of these species is considered to be critically endangered?

Scientists have declared that we are now living in the Anthropocene - the Age of Humans.

This is because we are leaving behind many traces of our existence that are expected to remain in the fossil record.

Which one of these is NOT expected to remain for long periods of geological time, and become a permanent part of the fossil record.

The last mass extinction on Earth took place approximately 65 million years ago. More than 50% of all species disappeared.

The extinction was triggered by an asteroid hitting Earth, but what was actually responsible for the loss of so many species?

This is a plantation in Indonesia. The crop it produces is used in many products, from soap to cooking oil and milk substitiutes.

Large areas of rainforest have been cleared to make room for these plantations, leading to loss of biodiversity in the region.

What crop is produced?

Mutalism is when two different species form a relationship that benefits BOTH species.

Which one of these pictures is NOT an example of mutalism.

The diagram shows an aquatic food web.

If the numbers of squid suddenly decreased, what would happen to the populations of killer whales and seaweed?