Question

what advantage do introduced species often have in a new ecosystem? * 5 points
○ they have no competitors or predators
○ they are smaller than native species
○ they require less food than native species
○ they are more resistant to pollution

what term describes the original organisms in an ecosystem? * 5 points
○ introduced species
○ endangered species
○ native species
○ threatened species

which of the following is not mentioned as a source of water pollutants? * 5 points
○ factories
○ ships
○ volcanoes
○ runoff from farms

Explanation:

1. For the first question, introduced species often lack the natural predators and competitors that would limit their population in their native range, letting them thrive in new ecosystems. The other options are not consistent advantages.
2. For the second question, native species are defined as the original, naturally occurring organisms in an ecosystem. The other terms refer to species with specific statuses or non-original introductions.
3. For the third question, factories, ships, and farm runoff are common anthropogenic sources of water pollution. Volcanoes are natural and not typically categorized as a mentioned source of water pollutants in standard environmental contexts.

Answer:

1. They have no competitors or predators
2. Native species
3. Volcanoes