Scientists are continuing their ________ into why the rocket exploded when it took-off.
investigation
monitor
The ocean contains many useful ________, such as salt, sand, copper, and oil.
resources
investigations
Underwater vehicles are often used for ocean ________ .
atmosphere
exploration
Scientists are making breakthroughs in medicine by ________ different ________.
launching, species
observing, investigation
launching, investigation
observing, species
I bought a telescope so I can ________ the stars at night.
preserve
observe
I love to float on the ________ of the water. It's so relaxing.
atmosphere
surface
Too much pollution can create a dirty und unpleasant ________ for many people
species
atmosphere
Scientists want to ________ life in the ocean because we have so much more to learn from it.
use up
preserve
Ocean ________ is useful in many different ways.
resources
exploration
Some experts are worried that humans will ________ the Earth's supply of oil one day.
come across
use up
Some researchers want to ________ the natural beauty of the ocean.
preserve
use up
Many ________ that live in the ocean are still being studied by scientists
satellites
species
Sometimes, ________ are used to predict the weather.
resources
satellites
Some companies think they will be able to ________ tourists into space within the next few years
monitor
launch
The tourists didn't ________ any rare type of fish on their roadtrip.
launched
come across
The equipment used to ________ the ocean floor is very expensive.
come across
monitor
It's important to ________ ocean waters.
monitor
surface