Antarctica's glaciers contain approximately 70% of the world's freshwater
a. True
b. False
Indicate whether the statement is true or false
True
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Tropical forests account for 25% of the earth's forested areas.
Answer the following statement true (T) or false (F)
Astronauts cannot survive temperatures exceeding 500°C in space
Indicate whether the statement is true or false
Human interactions between wildlife, homes, and highways
A) has never been a problem. B) is an increasing problem as humans populations increase and spread. C) has declined as the populations of most animals near humans have plummeted. D) has largely been addressed by expanding hunting seasons and limits.
Of the ions Cl-, Na+, NH4+ and NO3-, which will move towards the cathode?
A) only chloride ions B) only sodium ions C) both chloride ions and nitrate ions D) both the sodium ion and ammonium ions