sponge:a soft substance that is full of small holes and can absorb a lot of liquid, and is used for washing and cleaning

horseshoe:a U-shaped piece of metal that is attached to the bottom of a horse's hoof to protect it

Carvon:a chemical element that exists in its pure form as diamond or graphite, and is an important part of other substances such as coal and oil, as well as being contained in all plants and animals

preserved:to keep something as it is, especially in order to prevent it from decaying or being damaged or destroyed

amber:a hard, transparent, yellowish-brown substance that was formed in ancient times from resin (= a substance produced by trees) and is used in jewellery

tar:a black substance, sticky when hot, used especially for making roads

crab:a sea creature with five pairs of legs and a round, flat body covered by a shell, or its flesh eaten as food:

impression:an idea or opinion of what something or someone is like

dinosaur:a type of reptile that became extinct about 65,000,000 years ago. There were many different types of dinosaur, some of which were extremely large.

fish:an animal that lives in water, is covered with scales, and breathes by taking water in through its mouth, or the flesh of these animals eaten as food

sediment:a soft substance that is like a wet powder and consists of very small pieces of a solid material that have fallen to the bottom of a liquid:

trade:the activity of buying and selling, or exchanging, goods and/or services between people or countries

trilobite:a simple, flat sea creature that lived in the earliest period of life on earth, with a hard outer layer and a body in three parts