Ecological footprint refers to Select one:
a. the amount of biologically productive
land/sea area needed to support the
lifestyle of humans
b. all of the mentioned
c. the footprint area left by human
beings in the Amazon rainforest
d. the birth-death cycle of terrestrial
organisms
e. the footprint left by organisms left in
any given ecosystem
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How can studying economics us make better choices about how to use scare resources

Identify the youngest layer in the figure ( have to click one letter)

Which of the following is an accurate description of the recent political history of the democratic republic of the congo? a. religious tensions have escalated into full-scale civil war a number of times since the belgians left the country in 1960. b. the political leader who gained power after the overthrow of a corrupt dictator was assassinated. c. the military leadership felt the country was stable enough, so they permitted democratic elections to take place. d. in 1990, a dictator seized and has held power ever since.