Examine Figure 41.1. As water flows into the region with high solute concentration, it exerts an opposing force called ____ pressure, which eventually prevents additional water from moving into the compartment, bringing the system into equilibrium
Fill in the blank with the appropriate word.
hydrostatic
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Natural selection is a process in which environmental pressures result in the differential ________ and ________ of individuals in a population
a. survival, physical features b. genetics, mutations c. survival, reproduction d. reproduction, mutations e. genes, mutations
Which of the following methods would work best to estimate flower species diversity?
A) mark-recapture B) Lincoln Peterson index C) quadrats D) distribution mapping
What happens to a dust particle that is too small to fall from the inspired air and land in the alveoli?
A) It lands in the respiratory bronchiole, where it is coughed out B) It lands in the mucociliary ladder, where type II macrophages phagocytize it. C) It lands in the mucociliary ladder, where it is moved to the trachea to be exhaled. D) It lands in the bronchi, where it is absorbed. E) It is inhaled and then exhaled.
Consider three species (1, 2, and 3). It's known that species 1 and 3 were separated 10 million years ago based on geologic measurements
Genetic analysis at a neutral locus indicates that these species differ by 100 substitu-tions. If there are 10 substitutions separating species 1 and 2, how long ago did they diverge? a. 0.1 million years ago b. 1 million years ago c. 10 million years ago d. 100 million years ago e. cannot be determined based on the information provided