PLEASE ANSWER ALL question 11
As populations grow individuals tend to compete for

A. resource
B. stress
C. independence
D. dominance


question 12
How do biotic resources differ from abiotic resources?:

A. biotic resources are more important than abiotic resources
B. biotic resources are limited and abiotic are unlimited
C. biotic resources are living and abiotic resources are nonliving
D. biotic resources are non-living and abiotic resources are living


question 13
An example of a consumer in a pond ecosystem is:

A. water lily
B. algae
C. reed
D. frog


question 14
A food chain shows:

A. one possible pathway for energy
B. many possible pathways for energy
C. the amount of energy available to a producer
D. the amount of energy available to a consumer


question 15
In an energy pyramid , the bottom level represents:

A. comsumers
B. producers
C. scavengers
D. decomposers


question 16
In the following food chain , which organism is the primary consumer?

grass > rabbit > snake > hawk

A. grass
B. rabbit
C. snake
D. hawk


question 17
Which of these food chains is in the correct order?

A. caterpillar, water lily, frog, snake
B. water lily, caterpillar, frog, snake
C. snake, frog, caterpillar, snake


question 18
In the terrestrial food web, what would be the effect of a farmer introducing a rat poison in to the ecosystem that is toxic to rats and mice?

A. the population of fox would decrease
B. the population of grasshoppers would decrease
C. the population of hawks would increase
D. the population of rabbits would decrease


question 19
Examples of abiotic resource in a pond ecosystem is:

A. temperature
B. algae
C. fish
D. frogs


question 20
In the food chain, a snake is an example of a:

A. producer
B. primary consumer
C. secondary consumer
D. tertiary consumer