Did you know something as simple as planting a sunflower can provide food for insects and birds? CBeebies Hamza Yassin explains how everyday nature heroes play a crucial part in our ecosystem and how you have a role to play too! From the smallest seed to the largest tree, everything in nature has a purpose. Come on your own Eco Quest and find out how to make your nature walks an interactive journey of discovery. Can you find some lichen on a wall or a tree, earthworms in the ground or a dandelion growing through a crack in the pavement? Aimed at families with children aged 3+