Pre-Activity Questions: Use information from the lesson to answer these questions in complete sentences. 1. Describe how biodiversity would be different between a small island that is far away and a large island that is close to the mainland. 2. Explain why species on islands may have lower ecological tolerance than species on the mainland.

## Step 1<br />The first question asks us to describe how biodiversity would differ between a small island that is far away and a large island that is close to the mainland. Biodiversity refers to the variety of life in a particular habitat or ecosystem. <br /><br />## Step 2<br />The size of an island and its distance from the mainland can greatly influence the biodiversity of the island. A larger island that is closer to the mainland is likely to have a higher biodiversity. This is because larger islands can support a greater variety of habitats, which in turn can support a greater variety of species. Additionally, islands that are closer to the mainland are more likely to have species that have migrated from the mainland, which can increase biodiversity.<br /><br />## Step 3<br />On the other hand, a small island that is far away from the mainland is likely to have lower biodiversity. This is because smaller islands can only support a limited variety of habitats, which can only support a limited variety of species. Additionally, islands that are far away from the mainland are less likely to have species that have migrated from the mainland, which can decrease biodiversity.<br /><br />## Step 4<br />The second question asks us to explain why species on islands may have lower ecological tolerance than species on the mainland. <br /><br />## Step 5<br />Species on islands may have lower ecological tolerance than species on the mainland because islands often represent isolated environments with limited resources. This means that species on islands must adapt to a smaller range of conditions and resources, which can lead to a decrease in ecological tolerance.<br /><br />## Step 6<br />Additionally, islands are often subject to unique environmental pressures, such as isolation and limited resources, which can lead to a decrease in ecological tolerance. This is because species on islands must adapt to these unique conditions in order to survive, which can lead to a decrease in their ecological tolerance.