You are a field biologist studying 14 species of rodent that are found on both sides of the Grand Canyon. There are three species that are red in color, two species that are tan, and two species that are brown on each side of the Grand Canyon. You are interested in understanding how speciation occurred in these species of squirrels, and you have competing hypotheses about how speciation may have occurred in the group. The two phylogenies below represent two possible hypotheses for speciation patterns in this group. Tree 1 Brown sp. 1 E Brown sp. 2 E Tan sp. 1 E Tan sp. 2 E Red sp. 1 E Red sp. 2 E Red sp. 3 E Red sp. 1 W Red sp. 2 W Red sp. 3 W Brown sp. 1 W Brown sp. 2 W Tan sp. 2 W Tan sp. 1 W Tree 2 Brown sp. 1 E Brown sp. 1 W Tan sp. 1 E Tan sp. 1 W Red sp. 1 E Red sp. 2 E Red sp. 3 E Red sp. 1 W Red sp. 2 W Red sp. 3 W Brown sp. 2 E Brown sp. 2 W Tan sp. 2 W Tan sp. 2 E Your hypothesis is that there were seven different species of squirrels that were all separated by the formation of the Grand Canyon. T/F Tree 1 supports this hypothesis. Your hypothesis is that there was a single species of squirrel that was separated by the Grand Canyon, and then there was subsequent diversification. T/F Tree 2 supports this hypothesis.
Biogeography
The study of plants, animals, and other living things in terms of their geographic distribution is referred to as biogeography. Biogeography is usually examined in coexistence with ecological and historical variables that have affected organisms' spatial distribution across time. It is not only based on the habitation patterns; it is also about the reasons that cause differences in distribution. Biogeographic studies divide the Earth's surface into diverse flora and fauna compositions, notably the continents and islands. Biogeography is a field of science, but physical geographers have made vital commitments, especially in flora. Biogeography is a multidisciplinary field of study that combines concepts and data from ecology, evolutionary biology, taxonomy, geology, physical geography, paleontology, and climatology.
Types of Climate
The weather pattern in a long-term process in a locality, region, or even over the entire globe is known as climate. Generally, it is decided by calculating an average of thirty years' weather in a region. In that sense, the weather and climate are different.
Biome
It is defined as a definite community of animals and plants residing together in a climate. Each (plants and animals) having a characteristic appearance and distributed over a wide geographical area defined largely by regional climatic conditions.
Can you please explain this question and how to tell read these trees?
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