How does the rate of extinction today compare to the rates in the past?
A) The rate is much lower today than it has been, on average, in the past.
B) The rate is about the same today as it has been, on average, in the past.
C) The rate is much higher today than it has been, on average, in the past.
D) The extinction rate today can't be estimated or calculated.
C
You might also like to view...
The premise of personalized medicine is that:
A. two people can develop the same condition for different reasons. B. two people with the same disease likely share similar genotypes. C. two people with the same disease likely share common risk factors. D. two people with the same disease are likely to respond similarly to similar medications. E. two people with the same disease are highly unlikely to respond to similar medications.
The level of the vertebrate nervous system responsible for the skeletal muscle responses to stimuli is the ________ system.
A. somatic B. sensory C. sympathetic D. All of these answers are correct.
Your roommate is on an ultralow fat diet to try to lose weight. Given what you know about structure of the nervous system, what advice would you give him?
A. "You should eat some healthy unsaturated fats, like those found in fish, olive oil, and nuts, because your brain needs fatty acids to build the myelin sheaths around your axons." B. "You should drink large quantities of water, because the brain is mostly water." C. "You should eat trans fats, from donuts, because 'trans' is short for neurotransmission." D. "Good for you! Losing weight by any means necessary can only help your brain."
How did Darwin develop his theory of evolution?
A. Experimentation. B. Observation. C. Both experimentation and observation. D. Statistical analysis.