Is Mt. st helens man made or natural

How is it that the open ocean produces the highest net primary productivity of Earth's ecosystems, yet net primary productivity per square meter is relatively low? Oceans have the largest area of all the ecosystems on Earth.

What 3 processes have scientists proposed to explain how tectonic plates move?

Click to review the online content. Then answer the question (s) below, using complete sentences. Scroll down to view additional questions. What is the census? Why is it important to America?

What are 5 largest populated cities in north Florida

Under the heading of plate tectonics, there are three types of boundaries. In a convergent boundary, plates collide.

The behaviors and beliefs of a group of people can be called its

Which was not a domestic source of South Africa's economic growth between 1950 and 1980? inexpensive energy large workforce thriving industries modern technology

Why are the natural resources of the Arctic Islands not being removed very quickly? A. demand for them has dropped in recent decades B. harsh climate and transportation distances make it difficult and costly C.

Soil temperature changes happen so gradually that they do not play significant role in climate

How is this the result of climatic processes interacting with wave processes in different ways in different seasons?