In addition to being the most extensive river in the world, the Amazon is also the largest river in the world in terms of river volume

Birds are one of the most common animals we see, especially birds like sparrows, turtledoves, pheasants and magpies, which are often seen in flocks. However, one thing that is strange is that with so many birds, we rarely get to see bird nests, why is that?

Water bears are the common name for retarded animals, and these creatures are so small that their body length is usually no more than 1 mm, so we usually do not notice their presence.