Cellular respiration and photosynthesis are both complex processes that
A) result in the production of glucose.
B) release carbon dioxide.
C) generate oxygen from soil minerals.
D) require enzymes which promote either synthesis or breaking of chemical bonds.
D
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Which of the following is true regarding lakes?
A. Stratified layers of lakes are characterized by vertical mixing. B. Pollutants dilute better in lakes than in rivers and streams. C. Lakes are more vulnerable than streams to contamination. D. Lakes are flushed more easily than streams. E. Flushing of a lake usually takes days to weeks.
Vatnajökull is the largest and most voluminous Icelandic glacier. It is roughly circular in shape, overlays several volcanoes, and covers an area of approximately 8,100 km2 (3,100 mi2 ) with an average thickness of 400 m (1,300 ft)
This glacier is an example of a(n) A) ice cap. B) ice field. C) alpine glacier. D) ice sheet.
Put the steps of formation of the early solar system in order from oldest to youngest. (Note: "First" refers to the oldest event and "Fifth" refers to the youngest.)
A) Rapid expansion of compact, dense mass to create matter and space. B) Accretion of bodies to create protoplanets. C) Formation and rotation of solar nebula. D) Contraction of gases and start of nuclear fusion in the first stars. E) Accretion of rocky debris creates planetesimals. 1) First 2) Second 3) Third 4) Fourth 5) Fifth
An element associated with all organic compounds is _______.
A) carbon B) proton C) gold D) nitrogen E.) All organic compounds contain the element carbon.