The Sun tends to bloat outward by nuclear fusion, and contract due to
A. mass decrease.
B. gravitation.
C. nuclear fission.
D. reduced gaseous pressures.
E. its relatively slow spin.
Answer: B
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Trophic Cascade
What will be an ideal response?
A climate classification based on moisture using a water budget approach is an example of a(n)
A) empirical classification. B) genetic classification. C) combined classification.
Photosynthesis yields _________, respiration yields _________, and DNA expression yields _________.
Fill in the blank(s) with the appropriate word(s).
Melting permafrost might accelerate climate change because
A. carbon dioxide is trapped as water melts. B. polar bears and other arctic species rely on permafrost. C. sea levels will rise. D. methane gas stored in the frozen ground will be released. E. coral reefs rely on methane.