Spring tides occur when:
a. the Earth is closest to the Moon
b. the Earth, Moon and Sun are all in alignment.
c. the Moon is 90° out of alignment with the Sun and the Earth.
d. melting of the snow and ice makes water levels high.
b
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How does burning fossil fuels impact Earth's climate?
A. It warms the climate by increasing atmospheric water vapor. B. It does not affect Earth's climate. C. It cools the climate by exhausting oxygen into the air. D. It warms the climate by increasing greenhouse gas emission.
Anthracite is a very low-grade coal that has not been exposed to very much heat or pressure. Indicate whether the statement is true or false
Which biome is characterized by the highest annual rainfalls and primary productivity?
A) Temperate deciduous forests B) Tropical grasslands and prairies C) Tropical broadleaf forests D) Temperate grasslands and prairies
The urban heat island steepens the environmental lapse rate, creating unstable conditions by
A. greatly heating the ground surface and greatly heating the atmosphere further up. B. greatly cooling the ground surface with great heating further up in the atmosphere. C. greatly cooling the ground surface and greatly cooling the atmosphere further up. D. greatly heating the ground surface with less heating further up in the atmosphere.