Las variables o factores que no se modifican o se mantienen iguales se denominan

There are main groups in the modern periodic table of elements

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.