Ardi shows that our oldest ancestors probably did not look like humans or chimpanzees.

Ardi was a female, she was about 120 cm tall and 50kg.

There are still a lot of questions about fossils we have already found.

With the advanced technology, ew can make better predictions about climate change.

The water of a melted glacier goes to the ocean.

The climate on the Earth can change over time.

The probes are used to collect information about comets.

Governments plan missions to continue exploring.

The first probe was sent into space in 1950s.

It is a diagram that shows some important events in chronological order.

It is a picture with some information about time events.

It is a ruler with events in order of time.

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