True
Food chains follow a single path on how animals eat each other.
True
A food web shows how plants and animals are connected. It contains many food chains.
3
How many food chains make up the food web?
insect
Which organism is a herbivore
Plant
Which organism is an autotroph?
snake
Whish organism is a third-order heterotroph?
4th
To what trophic level does the snake belong?
bird
Which organism is an omnivore?
plant, bird, insect, snake
Which organisms belong to more than one food chain?
bird
Which organism belongs to more than one trophic level?
True
Decomposers are organisms (bacteria and fungi) that break down dead organisms. They could be at all trophic levels
False
The amount of energy available at different trophic levels in a food chain increases as the trophic level increases.
True
At each successive trophic level, some available energy is lost as the organisms use energy for metabolism. This energy is given off as heat loss into the environment.
sunlight
Energy that is lost at each trophic level of an ecosystem is replenished by
nutrients
Besides energy, what moves through the organisms at each trophic level of an ecosystem?
water cycle
Evaporation and condensation a part of the
evaporation
Plants lose water to the air through
Both urination and breathing out
Animals lose water to the air through
precipitation
The major process by which water in the atmosphere is returned to the earth is
growing
Autotrophs and heterotrophs use carbon-containing molecules for energy and for
carbon dioxide is released
When decomposers break down the carbon-containing molecules in dead organisms
nitrogen
Fertilizers provide plants with
both bacteria and lightning
Which of the following convert(s) nitrogen from air into a form plants can use?
both decomposes and urinates
An animal returns nitrogen to the environment when it
eating plants
Animals get phosphorus from
both rocks and decaying organisms
Phosphorus in the soil comes from
