Sunlight does not go very deep into water so seaweed must grow at the surface where its rays can reach them. Starting with the sun, food chains link together plants and animals in various ecosystems to help them survive. Intended for children of ages 6-12, this book describes these connections in a clear manner.
Sunlight does not go very deep into water so seaweed must grow at the surface where its rays can reach them. Starting with the sun, food chains link t...
Mathematicians say that symmetry has to be identical parts, but nature is never truly identical. However, it is far more interesting than geometric shapes This book shows how a person with arms outstretched has fivefold symmetry like a sea star, and if you drew a circle around his or her body in that position, the navel would be at its centre.
Mathematicians say that symmetry has to be identical parts, but nature is never truly identical. However, it is far more interesting than geometric sh...
