Salted fish is traded for fur and feed grains. A block of wood is whittled into a toy horse and sold at an artisan market.

Please note the value of investments can go down as well as up so you may get back less than you invested. This information is not a personal recommendation for any particular investment. If you are ...

Can you find different food chains in a savannah habitat? First, find a producer – a plant that makes its own food from sunlight. Next, find a consumer that eats the producer. Then, find another ...