Describe how plants on cliffs cause them to breakdown.
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what are the 4 different types of mass movement and how does each one happen?

The ozone hole is at its biggest each year in the ? hemisphere in the ? season.

The oil and gas found in the middle east are regulated by a. organization of petroleum exporting countries b. southwestern asian oil refineries c. north atlantic treaty organization

In the diagram, δgef and δhef are congruent. what is the value of x?