Why are the volcanoes of Hawaii shield volcanoes the same as spreading ridges? What will be an ideal response?
The magma is derived from the upper mantle in the oceans and is mafic. The large fluid eruptions
build up the shield volcanoes.
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The crust of the Earth is thickest under mountain ranges and thinnest in oceanic areas. Indicate whether the statement is true or false
Unless checked, population growth tends to continue until it runs up against environmental limits causing poverty, hunger, misery and resource scarcity—eventually leading to a population crash. This view was proponed by which thinker?
a) Thomas Malthus b) Frances Moore Lappé c) Paul Ehrlich d) Julian Simon
Describe the composition of a cinder cone
What will be an ideal response?
The form of nitrogen used by plants to produce various amino acids, proteins, nucleic acids, and vitamins is ____.
A. ammonium ions B. nitrogen gas C. proteins D. nitrites E. nitrate ions