(b) Fig. 4.2 is an electron micrograph of a red blood cell within a capillary. muscle cell
magnification >6500
Fig. 4.2
(1) Molecules of carbon dioxide that are produced in muscle cells are transported to the
blood.
Describe the pathway taken by these molecules of carbon dioxide.
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New york city has 2,181 inhabitants per square mile. the state of alaska has 1.03 inhabitants per square mile. ecologists would say alaska has a low exponential growth population density birth rate carrying capacity

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere

What is gene flow? apexa: selection for average traits b: when a population splits in twoc: a mutation becoming more commond: genes moving between two populations