Invasive Species
A non-native organism that causes harm to an environment
What is an invasive species?
the first trophic level in a food web
what are producers
symbiosis is a close relationship between two species. true or false?
what is true
biomagnification is the build-up of toxins in this part of the food chain
what is higher trophic levels
what is nitrogen
One reason invasive species are harmful to ecosystems
what is competition/resources
this percent of energy is passed from one trophic level to the next
what is 10%
in this type of symbiosis, both species benefit
what is mutualism
mercury build up most in this type of organism
what are top predators
what is nitrogen fixation
This invasive plant chokes out native species in the southeastern U.S.
What is Kudzu
a food chain shows one path of energy, while this shows many connections
what is a food web
camouflage is an example of this type of trait that helps animals survive
what is an adaptation
toxins like DDT become more concentrated as they move through this
what is a food chain
bacteria in these structures on plant roots help fix nitrogen
what are nodules
Invasive species often thrive because they lack this in their new environment
What are natural predators
this organism eats both plants and animals
what is an omnivore
a bird cleaning a crocodiles teeth is an example of this type of mutation
what is mutualism
why are humans at risk from biomagnification even if they don't use toxins directly
what is they occupy the top of most food chains and consume organisms that have accumulated toxins through their food sources
animals get nitrogen by doing this
what is eating plants or other animals
Give an example of an invasive animal and describe its impact on the local food web.
what are Lionfish?
(they prey on native fish and invertebrates that are important to the food web)
why the top predators are fewer in number than herbivores in a food pyramid.
what is the way energy flows through ecosystems
describe an animal adaptation that helps it escape predators
what is camouflage
explain how biomagnification can affect an entire ecosystem
what is concentrating toxins at higher trophic levels in the food chain
two steps of the nitrogen cycle
what are nitrogen fixation and nitrification