Why has it been so hard to come up with an accurate measure of Earth's carrying capacity for humans?
What will be an ideal response?
Humans have the ability to increase their own carrying capacity through technological revolutions in agriculture, industry, and medicine.
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Which of the following is NOT a process of aerobic respiration?
A. citric acid cycle B. glycolysis C. acetyl CoA formation D. oxidative phosphorylation E. lactate fermentation
Which substances are reabsorbed in the proximal convoluted tubule?
A. K+ ions B. Na+ ions C. HCO3- ions D. glucose E. All of the choices for this question are correct.
Studying the Sepia apama cuttlefish, Hanlon, Naud, and their colleagues observed that most success in producing fertilized eggs was attributed to the males guarding mated females from subsequent mating attempts by other males. What additional behavior contributed to successful production of fertilized eggs?
A. As opportunistic hermaphrodites, smaller males were able to mate and reproduce as females. B. Smaller males distracted larger males for more than 40 minutes, past the viability of their sperm, and then the smaller males mated with the females. C. The sparse population density of Sepia apama cuttlefish results in lower but equal reproductive successes among smaller and less aggressive males. D. Smaller, less aggressive males used mimicry of females to approach guarded females repeatedly to mate. E. All of the answer choices are correct.
According to the second law of thermodynamics, when energy is converted from one form to another, some of that energy is transformed into heat energy, which is generally released from the "system."
Indicate whether the statement is true or false