#Question id: 4709
#Section 2: Evolution
The horizontal axis of the cladogram depicted below is a timeline that extends from 100,000 years ago to the present; the vertical axis represents nothing in particular. The labeled branch points on the tree (V-Z) represent various common ancestors. Let's say that only since 50,000 years ago has there been enough variation between the lineages depicted here to separate them into distinct species, and only the tips of the lineages on this tree represent distinct species.
In Darwin's tree of life, each fork in the tree represents ________.
#Question id: 3297
#Section 2: Evolution
Which of the following is incorrect statement?
#Question id: 3480
#Section 2: Evolution
Which of the following statements about learning and behavior is correct?
A) Operant conditioning involves associating a behavior with a reward or punishment.
B) Associative learning involves linking one stimulus with another.
C) Behavior can be modified by learning, but some apparent learning is due to maturation.
D) Imprinting is a learned behavior with an innate component acquired during a sensitive period.
#Question id: 10651
#Section 2: Evolution
Which of the following value of A, B and C in above logistic growth of hypothetical population respectively?
#Question id: 9203
#Section 2: Evolution
The human impact that scientists determined has caused the most extinctions on record is ________, and beyond further losses from this impact, the other impact with the largest potential to cause future extinctions is ________.