How can humans reduce wind erosion and wave erosion?
A. by preventing farming in the affected areas
B. by spraying the affected areas with fertilizers
C.
by planting more trees in the affected areas
D. by supplying water to farmland

Which of the following is true about fossils? a. the relative age of fossils cannot be determined from their position in sedimentary layers. b. fossils found in lower layers of sedimentary rock are as old as fossils found in upper layers of sedimentary rock. c. fossils found in upper layers of sedimentary rock are older than fossils found in lower layers of sedimentary rock. d. fossils found in lower layers of sedimentary rock are older than fossils found in upper layers of sedimentary rock.

Characteristics of substance farming include all of the following except

The organ that has two atria and one ventricle is the