CYCLES 1
Earth's atmosphere has many gases in it. Our bodies use this one when we breathe.
a. nitrogen
b. carbon dioxide
c. oxygen
c. oxygen
When you exhale, you release _______________.
a. Oxygen.
b. Carbon dioxide.
c. Carbon monoxide.
b. Carbon dioxide.
What are you in a food web?
a. Producer
b. Consumer
c. Decomposer
b. Consumer
11. Several food chains that overlap form a ___________.
a. spider web
b. tangled mess
c. food web
c. food web
Food webs shows ______________.
a. That energy passes from organism to organism.
b. Where animals live.
c. the difference in spiders
a. That energy passes from organism to organism.
Earth's atmosphere is mainly made of the gases _______________.
a. Oxygen and carbon dioxide.
b. Carbon dioxide and nitrogen.
c. Nitrogen and oxygen.
c. Nitrogen and oxygen.
Plants absorb nitrogen ________.
a. from the soil
b. from the atmosphere
c. from the Sun
a. from the soil
What travels through a food chain or web?
a. Energy
b. Helium
c. Carbon
a. Energy
The brown trout is a carnivore. Why?
a. It eats a producer.
b. It eats meat or consumers.
c. It eats both producers and consumers.
b. It eats meat or consumers.
A living thing's home is called____________.
a. trait
b. habitat
c. soil
b. habitat
In which process do producers use carbon dioxide, water, and sunlight to produce oxygen and glucose?
a. the nitrogen cycle
b. oxygen cycle
c. the water cycle
b. oxygen cycle
1. Lightning, legumes, and bacteria (DECOMPOSITION) are a part of the ___________.
a. Water cycle.
b. Nitrogen cycle.
c. Carbon cycle.
b. Nitrogen cycle.
Which choice below correctly describes how energy is passed among the four organisms?
a. decomposer, consumer, consumer, producer
b. producer, consumer, consumer, decomposer
c. consumer, decomposer, producer, consumer
b. producer, consumer, consumer, decomposer
In an ecosystem, how are food webs and food chains different?
a. Food webs begin with animals and food chains begin with plants.
b. Food webs rarely begin with plants and food chains begin with animals.
c. Food webs show the relationship between many different food chains in a single ecosystem.
c. Food webs show the relationship between many different food chains in a single ecosystem.
Living and nonliving things that interact in an environment make up a(n) _______________.
a. habitat
b. ecosystem
c. food chain
b. ecosystem
The ____________at Earth's surface determines the form of precipitation.
a. water cycle
b. condensation
c. temperature
c. temperature
What is the role of decomposers in the nitrogen cycle?
a. They release nitrogen into the soil when they break down dead organisms.
b. They release nitrogen during cellular respiration.
c. They use ammonia when they break down dead organisms.
a. They release nitrogen into the soil when they break down dead organisms.
Trophic levels describe ______ in a community.
a. the energy available
b. succession
c. predator-prey relationships
a. the energy available
Which of the following is a proper food chain? (The arrows show energy flow)
a. sun -> producer -> carnivore -> omnivore -> decomposer
b. decomposer -> carnivore -> omnivore -> producer -> sun
c. sun -> producer -> herbivore -> carnivore -> decomposer
c. sun -> producer -> herbivore -> carnivore -> decomposer
What is a producer?
a. Breaks Down Waste
b. Eat Other Living Things
c. Makes Own Food
c. Makes Own Food
Many elements of weather such as temperature, humidity, precipitation, air pressure, wind and visibility are affected by__________, which is driven by the energy of the Sun and the amount of water in the air.
a. the carbon cycle
b. the water cycle
c. the rock cycle
b. the water cycle
Which process is NOT a way that carbon in dead organisms is returned to the carbon cycle?
a. becoming fossil fuel
b. combustion
c. decomposition
b. combustion
If 2000 kcal of energy are at the producer level (first trophic level), then how much energy is available at the secondary consumer level (third trophic level)?
a. 2000 kcal
b. 200 kcal
c. 20 kca
b. 200 kcal
Most of the energy available to a consumer trophic level is used by organisms for
a.performing photosynthesis.
b. transfer to the next trophic level.
c. respiration, movement, and digestion.
c. respiration, movement, and digestion.
Ecosystems differ from communities in that ecosystems usually contain
a. several climates.
b. several communities.
c. only one habitat.
b. several communities.