Affiliate Marketing Secrets

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1.
Which of these factors is biotic?
insects
water
sunlight
soil
2.
Which of these factors is abiotic?
bird
frog
hawk
wind
3.
Floods, droughts, or cold spells affect the _____ of an ecosystem.
abiotic factors
balance
materials
niche
4.
Ecologists count the number of frogs living in a pond community to determine the _____.
balance
limiting factors
organisms
population density
5.
The tree a squirrel lives in is its _____.
community
ecosystem
habitat
niche
6.
A living thing that uses energy, reproduces, and grows is called a(n) _____.
abiotic factor
ecosystem
habitat
organism
7. On the coral reef ecosystem figure shown, which factor is biotic?
rocks
sand
sea horse
water
8.
On the coral reef ecosystem figure shown, which factor is abiotic?
algae
sharks
rock
sponges

1. An example of a consumer is a _____
a. fern c. tree
b. grass d. rabbit
2. Photosynthesis, respiration and burning of fuels are all directly involved in the _____
a. water cycle c. carbon-oxygen cycle
b. nitrogen cycle d. phosphorus cycle
3. Materials that are recycled in the ecosystem include all the following except _____
a. nitrogen c. energy
b. oxygen d. carbon
4. In a food chain, herbivores are known as _____
a. secondary consumers c. producers
b. primary consumers d. carnivores
5. Fossil fuels are responsible for most _____
a. water pollution c. air pollution
b. soil pollution d. land pollution
6. Air pollution is caused by the following except _____
a. carbon dioxide c. nitrogen oxide
b. oxygen d. sulfur dioxide
7. Trapping of _____ causes the greenhouse effect
a. carbon dioxide c. nitrogen oxide
b. oxygen d. sulfur dioxide
8. In an ecosystem, _____ get the most energy
a. omnivores c. producers
b. decomposers d. herbivores
9. All are abiotic factors except _____
a. animals c. soil
b. sunlight d. air
10. A coral reef and a rainforest are examples of _____
a. niche c. community
b. habitat d. ecosystem