Food Chains
Who is at the top of the food chain?
Apex predators
Where is the most energy found in an energy pyramid?
The base- producers
What percentage of Earth's water is freshwater and not frozen?
1%
Toxic
What is photosynthesis?
The process plants use to create their own food
Why is there less energy at the top of the pyramid?
Because only 10% of the original energy is passed on to the next level
Name two places where freshwater can be found.
Lakes, rivers, groundwater
What type of pollution is often caused by logging or construction?
sediment
What 3 things does photosynthesis require?
water, sunlight, carbon dioxide
Where does a producer get its energy?
The sun
The sun
Where is groundwater stored?
What two types of pollution can be caused by animal droppings getting into a water source?
nutrient and bacterial
What do plants release as a byproduct of photosynthesis?
oxygen
What role do decomposers play in a food chain?
They break down dead and decaying material and recycle nutrients back into the soil
Why are there less apex predators than primary consumers?
Because there is less energy available to them since only 10% of the original energy is passed on through each level of the pyramid
How much of earth's freshwater is frozen in icecaps?
2%
What type of pollution causes harmful algae blooms?
Nutrient
What is the "food" that producers create through photosynthesis called?
glucose
Explain how energy moves through a food chain.
Why must there be more producers than consumers in a healthy ecosystem?
Because all consumers rely on producers for food.
How much of earth's water is saltwater?
97%
What type of pollution is often caused by laundry detergent? Why?
Nutrient- detergent contains phosphorus
Why is photosynthesis important for life on Earth?