Question

1. ¿cómo se llama el núcleo de roca antigua en la base de américa del norte?

escudo canadiense
grandes praderas
sierra madre
llanura costera

Explanation:

The Canadian Shield is a large area of exposed Precambrian igneous and high - grade metamorphic rocks (ancient rock nucleus) in North America. The other options refer to different geographical features such as grasslands (Grandes Praderas), mountain ranges (Sierra Madre), and coastal plains (Llanura Costera).

Answer:

Escudo Canadiense