Use the following diagram of Joseph Connell's study of barnacle distribution in Scotland to answer the following two questions

Which of the following is the most logical conclusion about the distribution of the two species of barnacle, Chthamalus and Balanus?

#Question id: 9169

#SCPH28 | Zoology

In areas of permafrost, stands of black spruce are frequently observed in the landscape, while other tree species are noticeably absent. Often these stands are referred to as "drunken forests" because many of the black spruce often "lean over" (that is, they are displaced from their normal vertical alignment). What is the most likely explanation for the unusual growth of these forests in this marginal habitat?

#Question id: 9170

#SCPH06 I Botany

Which of the following is an important feature of most terrestrial biomes?

#Question id: 9170

#SCPH28 | Zoology

Which of the following is an important feature of most terrestrial biomes?

#Question id: 9171

#SCPH06 I Botany

Suppose that the number of bird species is determined mainly by the number of vertical strata found in the environment. If so, in which of the following biomes would you find the greatest number of bird species?

#Question id: 9171

#SCPH28 | Zoology

Suppose that the number of bird species is determined mainly by the number of vertical strata found in the environment. If so, in which of the following biomes would you find the greatest number of bird species?

#Question id: 9172

#SCPH06 I Botany

Two plant species live in the same biome but on different continents. Although the two species are not at all closely related, they may appear quite similar as a result of ________.