It is greater than the range of variation seen in modern humans and chimps, though less than that of gorillas. Dentally, H. erectus have the thinnest enamel of any Plio–Pleistocene hominin.
Plants are autotrophs because they can prepare their own food. Photosynthesis takes place in leaves. Leaves contain stomata that allow for the exchange of gases during the process, and also help with the process of transpiration.
It is important to receive data from three separate locations because the more we know about the seismic waves and the places that they are more we gain for learning about them.