People are very interested in the flowers because they are produced so _____________.
rarely
lately
slightly
hardly
15
Scientists wanting to study the plant need to _____________ out their research before the flowers disappear again for another ten years.
find
start
take
carry
15
The tallest trees in the world are called redwoods and they can ____________ reach heights of around 91 metres.
luckily
obviously
clearly
easily
15
One tree was discovered and measured in 2006. The National Park Service then ________________ that at 115.7 metres, it was the tallest tree in the world.
answered
spoke
announced
told
15
The exact _____________ location of these trees is kept secret.
point
destination
route
location
15
It's kept secret to prevent the trees from being ______________.
wasted
injured
worn
damaged
15
A _______________ redwood tree lives for 500 to 700 years, although some have been found that are more than 2,000 years old.
familiar
typical
usual
general
15
The National Park Service says that the redwoods' great height is _____________ due to the climate in California.
