An organism that can make its own food is called a
In which process do producers use carbon from carbon dioxide to produce other carbon-containing molecules?
The nonliving parts of an ecosystem are called
If you were to make a physical model of the carbon cycle, what shape would the model take on?
The number of different species in an area is referred to as its
A group of land ecosystems with similar climates and organisms is called a(n)
Ponds and rivers are two types of
The many overlapping food chains in an ecosystem make up a(n)
Which biome is extremely cold and dry?
If all members of a species disappear from Earth, the species is said to be
The mating of California condors in zoos is an example of
If a kestrel eats a mouse that eats grass, the kestrel is a
A diagram that shows how much energy is available at each feeding level in an ecosystem is a(n)
The deciduous forest biome is typically populated by many grasses, along with a few shrubs and trees.
Organisms that capture the energy of sunlight to make food are called producers.
Second-level consumers may be either carnivores or omnivores.
Producers release the gas oxygen as a product of photosynthesis.
Oak, maple, and beech trees, which lose their leaves each year, are typically found in a boreal forest.
The arrow in a food chain represents the energy.
Describe two roles bacteria play in the nitrogen cycle.
Explain why decomposers are essential to life on Earth.
Explain the difference between a population and a community in an ecosystem.
Briefly describe the steps in the water cycle.