Answer: Around 760 miles (1,220 km)
At the center of the Earth is the core. According to NASA, It has two parts; The solid, Inner core which's made up of iron has around 760 miles (1,220 km). It's surrounded by a liquid, outer core composed of a nickel-iron alloy. The outer core is approximately 1,355 miles (2,1801 km) thick
Explanation:
I would say B. 140ft, because it would be the most accurate
Answer:
Explanation:
An ecosystem is a natural environment and includes the flora (plants) and fauna (animals) that live and interact within that environment. Flora, fauna and bacteria are the biotic or living components of the ecosystem.
Answer:
Due to erosion.
Explanation:
An unconformity refers to a type of geologic contact that occurs boundary between rocks. The main causes of Unconformities is erosion, wears away rocks and rock deposits never form. The most common cause of unconformity is erosion in which the younger rocks spread on older rocks with the passage of time. In Cardenas layer, erosion is also occurs that leads to unconformity in that region which leads to the formation of boundaries in the rocks.
