What are the bacteria in the roots of legumes called?
Rhizobium
100
What habitat is good for lots of fat?
Arctic
100
What is combustion?
Burning of fossil fuels
100
What level of consumer exists in the third trophic level?
Secondary consumer
200
Where do decomposers get their energy?
Dead plants and animals
200
What is the process of turning ammonium into nitrate called?
Nitrification
200
Why do crocodiles have eyes and nose on top of their head?
They can't breathe under water, but must hide to surprise prey
200
If there was 15 tonnes of carbon on the earth in the age of the dinosaurs, how much carbon is on the earth now?
15 tonnes
200
What do animals in the 5th trophic level eat?
Meat
300
What does a primary consumer eat?
Plants
300
After lightning combines nitrogen and oxygen in the air, how does NO & NO2 get into the soil?
Dissolving in rainwater
300
Name two adaptations for desert animals
Store water, store fat, thick feet, thin skin, scaly skin, nocturnal, special kidneys
300
How do animals get carbon into their bodies?
Eating plants
300
Here's a food chain:
wheat --> grasshopper --> mouse --> snake --> mongoose
Which animal is the tertiary consumer?
Snake
400
Is a quaternary consumer an herbivore or a carnivore?
Carnivore
400
What are the two steps in assimilation?
Plants take nitrates from the soil, animals eat plants to get nitrogen nutrients
400
Why do birds have hollow wings?
To make them lighter to fly
400
What form of carbon do plants create in photosynthesis?
Glucose (C6H12O6)
400
Here's a food chain:
wheat --> grasshopper --> mouse --> snake --> mongoose
What level consumer is the mongoose?
Quaternary consumer
500
What would happen to the energy flow in an ecosystem with NO decomposers?
No nutrients are broken down and returned to the soil for plants to grow
500
Name THREE ways that nitrate is formed in the soil
Legume nitrogen fixing, lightning nitrogen fixing, nitrification of ammonium
500
Name three ways humans have adapted to go in the water
Flippers, goggles, oxygen mask, thick clothes for protection
500
Can the carbon cycle exist without factories?
Yes! It did for millions of years. Plants and animals do respiration to release carbon dioxide
500
Describe the difference between a food chain and a food web
Food chain is linear (one animal eats another). Food web is a mix of food chains where each animal eats lots of other animals in different food chains.