Energy Flow
What is the main source of energy for most ecosystems?
Sun
What process do plants use to make sugar?
Photosynthesis
What type of organism makes its own food?
Producer
Is sunlight biotic or abiotic?
abiotic
Which biome has very little rainfall and abundant sun?
Desert
Put these in order: consumer, producer, Sun.
Answer: Sun → producer → consumer
What energy source is needed for photosynthesis?
Sunlight
What type of organism eats other organisms?
consumer
Is a rabbit population biotic or abiotic?
biotic
Which biome is extremely cold, dry and has very few trees?
Tundra
What direction does energy move through an ecosystem?
One directions/ producers to consumers
Name two materials plants need for photosynthesis in order to make sugar.
Water or carbon dioxide
What type of organism breaks down dead organisms?
Decomposer
Name ONE abiotic factor that can affect plant growth.
Water, temperature, sunlight, or soil
Which biome is hot, wet, and has very high biodiversity?
Rainforest
Which has more available energy: a producer or a primary consumer?
Producer
What sugar is produced during photosynthesis?
Glucose
What two things can producers do with the sugar they make?
Use it for growth/ store it for later
A drought causes grass to decrease. How does this affect the primary consumer?
They would also decrease
Four seasons, moderate rainfall, and many deciduous trees. What biome?
Temperate forest
Why are there fewer organisms at the top of an energy pyramid?
Less energy is available.
A plant gets water and COâ‚‚ but no sunlight. Can it make sugar?
No
What do decomposers return to the environment?
Nutrients
The reintroduction of wolves in a territory reduces the number of rabbits. Is this a biotic or abiotic factor?
biotic
Long, cold winters, short summers, and many evergreen trees. What biome?
Taiga