More than half of the presently identified species on Earth are
A) birds.
B) fish.
C) human.
D) insects.
Correct Answer:
Verified
Q2: At least five mass extinction events have
Q3: The end of the Permian period approximately
Q4: Of the species humans have catalogued, most
Q5: Without places to live, Earth's biodiversity will
Q6: Human developments like housing, shopping centers, or
Q8: Attacked by chestnut blight, the American chestnut
Q9: Biologists have spent the past 200 years
Q10: Nonhuman species are
A) relatively expendable since other
Q11: The number of species of organisms on
Q12: Functioning ecosystems provide a variety of benefits
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