21. Consider this food chain : algae water fleas minnows trout bear
What is the producers
A. bear B. trout
C. algae D. water fleas
22. Consider this food chain : algae water fleas minnows trout bear
The minnows in this food chain are
A. top carnivores
B. tertiary carnivores
C. secondary carnivores
D. primary carnivores
23. For the following food chain : seeds sparrow owl there are 100000 kJ of energy available
in the seeds, how many kilojoules is passed on to the owl
A. none
B. 1000 kJ
C. 10000 kJ
D. 100000 kJ
24. Whst is mutalism mean .
A. Relationship of two types of creature that was another creature to eat.
B. Relationship of two types of of life Different parties have two types of benefits. And can not be separated.
C. Relationship of two types of creatures that one party can benefit. Other parties did not benefit.
D. Relationship of two types of species living dead. The other one is still alive, and releasing the carcass
to make a living. Decaying decompose and inorganic compounds.
25. What is the relationship of Flower with butterfly
A. Parasitism
B. Mutualism
C. Competition
D. Commensalism
nitrogen,
hydrogen.
phosphorus
and sulfur
The recycling of these elements usually involves three general steps: