The correct answer includes animals, forests, mountains, and rivers. These are all elements of our natural heritage as they are part of the Earth's ecosystem and have existed for thousands of years. Animals, forests, mountains, and rivers are all important for maintaining biodiversity, providing habitats for various species, regulating climate, and supplying resources such as clean water and timber. Satellites and fighter jets, on the other hand, are man-made objects and do not belong to our natural heritage.