Помогите 10 вопросов к тексту?New evidence found by Russian archaeologists suggests

Помогите 10 вопросов к тексту?

New evidence found by Russian archaeologists suggests that humans may have lived in the rugged lands of Arctic Siberia much earlier than previously thought. The discovery of central hunting tools along the Yana River in central Siberia has added at least another 15,000 tears to the previous date. Human occupation of this area could now go as far back as 30,000 years ago.

Dr Vladimir Pitulko of St Petersburg led a team of scientists who discovered the site. Uncovered were stone and ivory tools which included spear tips мейд of rhinoceros horn and mammoth tusk. The surprise findings indicate that humans were able to survive in harsh conditions during glacial times in this particular part of Siberia while the east of the Northern Hemisphere was entombed in ice.

Scientists are also trying to make connections between the existence of these humans in Siberia and the Clovis who are considered the first humans in North America. The similarity of the tools found in both areas suggests the possibility that at some point the people in Siberia made their way across from Asia to the Americas. Some scientists see this as evidence to explain the peopling of the Americas via Bering Land Bridge.