extinction occur when
a. no member of a species can adapt to changing conditions before it dies
b. no member of a species has the alleles necessary to survive and reproduce when conditions change
c. members of a species do not realize that conditions are changing until the gene pool is greatly diminished
d. the changing conditions fail to produce new alleles to save the species
b. no member of a species has the alleles necessary to survive and reproduce when conditions change
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What is the highest spot elevation (“X”) on the map and in what PLSS (Public Land Survey Section) section is it located?
Figure 24.8 is a portion of the Philipp, Mississippi, 7.5-minute quadrangle in northwestern Mississippi. The Tallahatchie River flows through the landscape from west to east. (Remember to use the topographic map symbol legend inside the front cover of this manual.)
Review Figure 24.4, analyze Figure 24.8 closely, and answer the following questions and completion items about Figure 24.8.
Compared to relatively developed countries, developing countries have a higher percentage of workers in which sector of the economy?
A) primary B) secondary C) tertiary D) quaternary
What allowed scientists to confirm their theories that the Earth's interior had layers?
a. A large earthquake that occurred in Alaska b. A system of 800 seismic stations placed worldwide c. The correlation between intensity, frequency, and characteristics of waves d. All of these choices
Nuclear power will probably continue to be a part of energy production, particularly in countries that lack fossil-fuel reserves.
Answer the following statement true (T) or false (F)