Outline the conditions necessary for a planet to maintain an ocean of liquid water permanently. What will be an ideal response?
The conditions necessary to maintain a large, permanent liquid ocean include the following:
(1) a planet that moves in a nearly circular orbit around a stable star; (2) the distance of the
planet from the star must be such to provide a temperate environment in which water is
liquid; (3) the planet’s sun must not be a double or multiple star that provides orbital years
with irregular periods of intense heat and cold; (4) materials that accreted to form the planet
must have included water and substance capable of forming a solid crust; and (5) the planet
must be large enough that its gravity will keep the atmosphere and ocean from drifting off
into space.
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Even as early as 1910 in the U.S., services exceeded manufacturing employment
Indicate whether the statement is true or false
A ____________________ is an element or inorganic compound that occurs naturally in the earth's crust.
Fill in the blank(s) with the appropriate word(s).
An S-shaped population growth curve best describes ________
A) rapid and steady rate growth B) exponential growth C) logistic growth D) slow and constantly changing growth E) unlimited growth
What is the primary reason for the elevated position of the oceanic ridge system?
What will be an ideal response?