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Question 5
A tick is living on a cow. A bird comes by and eats the tick off of the cow. Which best describes the relationship between the bird and the cow?
a
Parasitism
b
Commensalism
c
Mutualism
d
Competition
e
Predation


Question 6
Which of these is considered commensalism?

a
Barnacles grow and live on whales. The barnacles don't affect the whales.
b
A butterfly pollinates flowers.
c
A tapeworm lives in the intestines of an organism making him sick.
d
A wolf hunts for a rabbit.


Question 7
Which best describes how predation affects an ecosystem?

a
Predator population will increase until all the prey is gone.
b
The prey population will always grow because more are born than can be eaten.
c
It's a predictable cycle: As predators increase, prey decreases. When prey decreases, then predators decrease. When predators decrease, prey can increase. As prey increases, predators increases.
d
The predator and prey populations always stay constant


Question 8
Which of the following will organisms compete for in an ecosystem? Mark ALL that apply.

a
Food
b
Water
c
Space
d
Territory
e
Mates
f
Sunshine