Trophic Levels/energy flow
What is the main source of energy for the food chain?
What is the Sun?
What gas makes up most of the air we breathe?
What is nitrogen?
What is an invasive species?
What is a species that moves into a new area and causes harm?
What is it called when two species live closely together?
What is symbiosis?
What is biomagnification?
What is the increase of toxin concentration as it moves up the food chain?
Which level has the most energy in the pyramid?
What are the producers?
What kind of organisms "fix" nitrogen from the air into the soil?
What are bacteria?
What can invasive species compete with native animals for?
What are food and nesting sites?
What kind of symbiosis helps both species?
What is mutualism?
What is bioaccumulation?
What is the buildup of toxins in an organism over time?
How much energy is passed to the next trophic level?
What is 10%?
What process turns dead plants and animals into nitrogen compounds in the soil?
What is decomposition?
How can invasive species harm farms?
What is by damaging crops?
What kind of symbiosis harms one species and helps the other?
What is parasitism?
Why do toxins like DDT and mercury biomagnify?
Because they are not easily broken down or excreted.
What trophic level does Vulpes zerda (Fennec fox) belong to?
What is the secondary consumer?
What do plants use nitrogen for?
What is to make proteins and grow?
How can invasive species hurt helpful insects?
What is by eating them?
What is a physical or behavioral change that helps an animal survive?
What is an adaptation?
Which animals are most affected by biomagnification?
What are top predators?
Why does the top level of the pyramid have the least energy?
What is because energy is lost as heat at each level?
What is it called when nitrogen moves from the soil back into the atmosphere?
What is denitrification?
Why do invasive species cause problems in ecosystems?
What is because they upset the balance and harm habitats?
How does camouflage help animals survive?
What is by helping them hide from predators?
How did DDT affect bird populations?
It caused eggshell thinning, leading to population declines.