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More Uses of Infinitives LESSON 3

EXPLORE

1 READ the introduction and student presentation. Notice the words in bold.
CD3-19

Tiny Creatures in a Big Ocean

Professor: Last week I gave you an assignment to get you
thinking about your own future jobs. I asked you to research
someone with an unusual job and gather enough information to
give a presentation to the class. Yuri, would you like to go first?
Yuri: Sure. My hometown is too far from the coast for me to go
there very often, but I’ve always loved the sea. That’s why I chose a
scientist who studies the oceans—Dr. Kakani Katija.
Kakani Katija is a National
Geographic Society Dr. Katija researches the way warm and cold water mix and move
Emerging Explorer.
in the oceans. She does this to learn more about the Earth’s
climate systems. The movement of water in the oceans has a big effect on our climate. So
does the movement of living creatures, according to Dr. Katija.
A single whale is too small to have a big effect on the movement of water. However,
millions of tiny creatures moving together in the same direction have enough mass 1
to make a difference. In fact, Dr. Katija believes that the movements of creatures in the
ocean may influence our climate as much as the tides and wind do.

Dr. Katija’s research provides important new reasons for protecting life in the oceans.

1 mass: the amount of matter an object has

A school of black-striped
salema swimming together
in the Pacific Ocean

UNIT 10 LESSON 3 279
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