この本の別のエディションでよく使われている100語。
across
almost
already
america
among
animals
another
between
billion
biodiversity
birds
century
con
conservation
countries
down
during
earth
economic
ecosystems
endangered
enough
environment
environmental
even
example
extinction
far
few
first
food
forest
forms
found
future
genetic
global
growth
habitat
half
hawaii
human
humanity
hundred
including
individuals
ing
international
island
kind
known
land
large
least
less
level
life
live
living
may
million
national
native
natural
nature
new
now
number
organisms
own
part
people
per
percent
planet
plants
population
rate
reserves
result
rhino
science
small
species
states
still
sumatran
ten
thousand
three
time
tion
trees
tropical
two
united
water
wild
world
years