3. A native species and a non-native species are competing for resources within the same ecosystem The non-native species is more likely to survive than the native species in which of the following situations? Both the native species and the non-native species thrive on the same food source. The native species is immune to certain pathogens in the ecosystem. Predators prey on both native and non-native species c The non-native species has no natural enemies in the ecosystem.

## Step 1<br />This problem is about understanding the dynamics of species competition in an ecosystem. The question asks us to identify the situation in which a non-native species is more likely to survive than a native species.<br /><br />## Step 2<br />The first option suggests that both the native and non-native species thrive on the same food source. This would mean that both species are competing for the same resources, which would not necessarily give the non-native species an advantage.<br /><br />## Step 3<br />The second option states that the native species is immune to certain pathogens in the ecosystem. This would mean that the native species has a natural advantage over the non-native species, as it is not affected by certain diseases.<br /><br />## Step 4<br />The third option suggests that predators prey on both native and non-native species. This would mean that both species are equally vulnerable to predation, which would not give the non-native species an advantage.<br /><br />## Step 5<br />The fourth option states that the non-native species has no natural enemies in the ecosystem. This would mean that the non-native species is not affected by any natural predators or diseases, which would give it a significant advantage over the native species.