Which of the four sedimentary layers in this figure is the oldest?
A. the layers in the middle
B. the layer on top
C. the layer on bottom
D. There is not enough information to tell.
Answer: C
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Aquaculture would be more sustainable if
a. consumers chose to eat fish species that are primary consumers instead of secondary consumers b. consumers chose to eat top predators c. fish farms were located near mangrove forests d. fish farms were located near estuaries e. chemical pesticides were used to control common fish diseases
Coral and barnacles are both arthropods due to their hard outer exoskeletons. Indicate whether the statement is true or false
Which of the following Acts prohibited dumping of waste materials into rivers without permits?
A) 1899 Rivers and Harbors Act B) 2006 REACH Act C) 1970 Resource Recovery Act D) 1980 CERCLA Act E) 1965 Solid Waste Disposal Act
?Land-based glaciers in Greenland and other parts of the world are slowly melting, and sea levels are rising.
Answer the following statement true (T) or false (F)