dangerous
history 
vacation
popular
favorite
memory
personal
educate
regular
continue
potato
natural
sensitive
energy
emotion
period
property
condition
imagine
attention
together
beautiful
library
hospital
another

Challenge Words

juvenile
astonish
ovation
amateur
obvious
      
                 
         Key Vocabulary
canopy - the high, sheltering branches of rain forest trees
captive - captured; held against one's will
dilemma - a situation in which one is given difficult choices to make
extinction - the condition of having died out
genes - tiny pieces of matter in cells that carry the blueprints for characteristics
habitat - a natural environment for native creatures
humid - containing a large amount of water vapor
observation - the act of paying close attention
predators - animals that prey on others
reintroduction - the process of returning animals to their native habitats