In a graphical representation of an organism's population growth in a given habitat, the growth rate for an organism whose population is increasing according to its biotic potential is best represented by a(n)
A) line with a negative slope.
B) S-shaped curve.
C) flat line (no slope) set at the carrying capacity of the environment.
D) exponential growth curve.
E) flat line (no slope) set at the equilibrium point of environmental resistance versus biotic growth potential.
D
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All of the phenotypes listed below are determined at least partially by genotype. Which trait is most likely to be influenced by the environment as well?
A. eye color B. height C. weight D. facial features E. None of the answer options is correct; all of the traits are exclusively determined by genotype.
An elephant has a higher total resting metabolic rate than a mouse
A. true B. false
Based on the below diagram and other information from your text, what is the most likely (e.g., most parsimonious) explanation for the evolution of flight in vertebrates?
A. The common ancestor of all terrestrial vertebrates was wingless and wings evolved independently three different times: in bats, in pterosaurs and in the common ancestor of birds and dinosaurs.
B. Wings evolved once in vertebrates (e.g., the common ancestor of all terrestrial vertebrates had wings) and wings were subsequently lost in all but three lineages: bats, pterosaurs and birds.
C. The common ancestor of all terrestrial vertebrates was wingless and wings evolved independently three different times: in bats, in pterosaurs and in birds.
D. The common ancestor of all terrestrial vertebrates was wingless and wings evolved independently two different times: once in bats and once in the common ancestor of birds, pterosaurs and dinosaurs.
E. The common ancestor of all terrestrial vertebrates was wingless and wings evolved independently three different times: in bats, in birds and in the common ancestor of pterosaurs and dinosaurs.
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
Gather Content
· What do you know about the evolution of flight in vertebrates? What other information is related to the question?
Choose Answer · Given what you now know, what information is most likely to produce the correct answer?
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Females that start smoking as teenagers are
__________ percent more likely to develop breast cancer than those who do not take up the habit. a. 40 b. 50 c. 60 d. 70 e. 80