In what sense do we say we are looking back in time when we are looking at the stars?
A) We see stars as they once were when their light reaches us.
B) Because space curves, we are actually looking at the past when we look in the night sky.
C) Because stars are emitting immense radiation, we are seeing processes that have already happened.
D) Because Earth's atmosphere bends and distorts their light.
A
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Only 2% of the earth's land surface is covered by terrestrial biodiversity hotspots. How many of the world's flowering plant species live in these hot spots?
A. 0.5% B. 2% C. 12% D. 30% E. 50%
Which of the following describes a role that satellites cannot do?
A. They provide information about surface water temperatures. B. They provide information about the Earth-atmosphere energy balance. C. They monitor the percolation of water in soils. D. They monitor the amount of snow cover.
How are Detrital sedimentary rocks primarily classified?
a. Aphanitic or Phaneritic b. Igneous Texture c. Color d. Grain or Particle Size
Earthquake forces are too great to be influenced by human activity
Indicate whether the statement is true or false