Describe the composition of a cinder cone
Cinder cones, which are the smallest type of volcano, usually consist of predominantly gravel-sized pyroclastics. Gas-charged eruptions throw molten lava and solid pyroclastic fragments into the air. Falling under the influence of gravity, these particles accumulate around the almost pipe-like conduit for the eruption as a large pile of tephra.
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The Polynesian colonies used a system of shells and bamboo to represent island positions for
navigation. Indicate whether the statement is true or false.
A ban on elephant poaching was removed in the late 1990s to
A) provide needed monetary resources for developing economies in the region. B) allow local ranchers to protect their cattle herds. C) to allow some African states to sell down their inventories of ivory. D) to supply ivory to the large Chinese market. E) Elephants herds had recovered to a stable populations size.
What is the name for the process in which glycogen is converted to glucose?
A) digestion B) glucogenesis C) glycogenolysis D) none of these
Which of the following best matches the description?Bacteria that convert atmospheric nitrogen gas into forms of nitrogen that plants can use.
A. nitrogen-fixing bacteria B. limiting factor C. producer D. omnivore E. nitrogen cycle F. carbon cycle G. ectoparasite H. biomass I. intraspecific competition J. denitrifying bacteria K. habitat L. trophic level M. interspecific competition N. secondary consumer O. community P. herbivore