In a habitat, giraffes' necks differ in size. Some have shorter necks and some have longer necks. A drought occurs and the lower-lying shrubs in the area die off. Which of the following is a plausible explanation of what may happen to the giraffe population due to this change?Almost immediately, the giraffes with shorter necks would decrease in population, and the giraffes with longer necks would increase in population.

a. Over time, the giraffes with shorter necks would decrease in population, and the giraffes with longer necks would increase in population.

b. Over time, the giraffes with longer necks would decrease in population, and the giraffes with shorter necks would increase in population.

c. Almost immediately, the giraffes with shorter necks would decrease in population, and the giraffes with longer necks would increase in population

d. Almost immediately, both the giraffes with shorter necks and the giraffes with longer necks would decrease in population.

Match the following. match the items in the left column to the items in the right column. 1. foreshocks process used to locate the epicenter of an earthquake 2. magnitude newer magnitude scale that measures the amount of moved (displaced) rock along a fault to determine the strength of an earthquake 3. mercalli intensity scale measure of the total amount of energy released during an earthquake 4. moment magnitude scale areas on active faults where a major earthquake hasn't occurred in a long time 5. richter scale mini-quakes that usually occur before a major earthquake 6. seismic gaps scale that measures the effects or severity of an earthquake 7. triangulation scale of magnitude based on the size of seismic waves produced by an earthquake

Read the following scenario to answer the following question. over the past 60 years, many amphibian species have experienced significant population declines, and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. when most populations of a wide-ranging amphibian species are lost and the few remaining populations are widely separated, we expect to see that a. the founder effect becomes increasingly important b. microevolution no longer occurs c. gene flow between populations is reduced d. artificial selection becomes a greater factor in microevolution

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.