Periods of adaptive radiation are most likely to occur after a change in the environment causes new habitats to form
Indicate whether the statement is true or false
TRUE
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True or false: Kidneys are well adapted for osmoregulation because they receive a large fraction of the blood leaving the heart at each heartbeat
A. true B. false
In which of these mitosis phases is the replication of DNA accomplished?
This diagram shows the steps in mitosis, with labels to reference in the questions below.
A. A, which is prophase.
B. E, which is cytokinesis.
C. None of these answer choices is correct.
D. A, which is mitosis.
E. C, which is telophase.
A reaction is
a. a reflex. b. involuntary. c. voluntary. d. both a and b.
Cancer is characterized by _____________.
a) uncontrollable cell proliferation b) formation of malignant tumors c) the invasion of surrounding healthy tissues d) all of the choices are correct