The us consumes almost of timber annually.
a. 5 million cubic feet
b. 20 billion cubic feet
c. 40 billion cubic yards
d. 30 million cubic yards

Which outcome is not caused by gravitational forcea. gas and dust come together to form a planet b. planets orbit a star c. two atoms come together to form a molecule d. stars cluster to form a galaxy

Which of the following best describes the circumstance under which countries block the importation of certain products into their country? a. importation blockade b.trade barrier c.trade inhibitor d. domestic protection act

Identify the type of weathering seen in each picture ? chemical weathering mechanical weathering