a . They can be used to clean up oil spill in a process called bioremediation .
b . They can be used in industry to generate products particularly in food processing .
c . They are present on the skin and help crowd out harmful bacteria .
d . They are the primary producers of most ecosystems .
e . They function in waste water purification to remove both organic and inorganic substances .
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Question 3
Which fossil evidence is considered an intermediate between reptiles and birds ?
Select one :
a . Archaeopteryx
b . Eusthenopteron
c . Seymouria
d . synapsids
e . therapods
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Question 4