Beach sand is eroded by wind and water and if erosion is not prevented, people will have to come in later and dredge the beach. the sand fence was installed to prevent erosion. what else is used to prevent beach erosion in this case?
a) rocks
b) dune plants
c) hills and mounds
d) pathways for walking

Identify the composition of oceanic and continental crystal rocks.in a model of earth’s interior,where would these rocks appear?

(6.02 mc)what affect do marine protected areas have on environmental quality? they increase environmental quality by preventing resource overuse. they increase environmental quality by adding new species. they decrease environmental quality by removing all human activity. they decrease environmental quality by adding recycling facilities.

Science which of the following is an example of a cyclic behavior that is seasonal? i think the answer is d, i just need to double check : ). a. running from predators. b. searching for water. c. hunting at night. d. migrating for warmth. ***