3. The half-life of carbon-14 is about 5600 years. A
fossil with 1/4 the normal
proportion of C4 is
probably
years
old.

A. 2,800
B. 11,200
C. 22,400

What is the "great pacific garbage patch"? a large area of marine debris concentrated by rotating ocean currents a large area around the pacific rim where debris collects from natural disasters such as tsunamis an area in the pacific ocean where trash is intentionally dumped due to lack of landfill availability a large trash dump located in hawaii

Adrought killed all the plants in an agricultural farmland. gradually, due to wind and some birds for. nearby areas, new plants started sprouting l. what stage of succession was taking place in the farmland? a) competition b) nudation c) ecesis d) reaction e) migration

Modern sea star larvae resemble some primitive vertebrate larvae. this similarity may suggest that primitive vertebrates