In 1787, Lavoisier suggested that scientists should agree on names for chemicals. Before then, scientists made up their own mysterious names. Chemical names still sound pretty mysterious but - you can sure your teacher didn't make them up.

A(n) _________ for naming has been set up.

She missed the sounds of freedom: the humming, the buzzing. She missed long, lazy afternoons, sweetly snoozing with her family. She missed keeping a doting, but watchful, eye on the pride's rowdy cubs. She missed nibbling. She missed snuggling. She missed playful swats and pats. And oh how she missed having her face and ears roundly washed.

She was ________.

During the day at the weather station, two weather forecasters and a meteorologist are on duty. At night there is one forecaster. Weather conditions are updated around the clock.

Someone is always _________.

Nelly Stoner looked puzzled. "You know, something odd may be going on. I thought I had two more people on this tour, but I'm not sure which two. We've had so many visitors today, one face started to look like another. I went back to the ticket booth to count the stubs for the tour. There were twenty-two, but only twenty people came off the boat. I'll take you to the gift shop and then come back to check around."

She was ____________.

Before long the whole family saw a change in Clara. Dorthy and Sally noticed that her voice was stronger. Stephen said that her eyes were brighter that they had been.

She was _______.

Mandy thought of her dad. Sometimes he treated the animals people brought to him for free. Like Tommy Pickard's hamsters. Tommy was seven and hadn't realized that feeding chewing gum to hamsters wasn't good for them. He came into Animal Ark every day to see how they were doing.

Tommy had made a ____________.

Rushing like a whirlwind into the kitchen, Sadako cried, "Oh, Mother! I can hardly wait to go to the carnival. Can we please hurry with breakfast?"

She was _______.

Yolanda sighed. She wondered unhappily how much time she had to cram in the precious morsels of Chicago living. She suddenly loved her street, her school, the kids who were not her friends. She loved the great public library and the Art Institute of Chicago. How long, she wondered, before her mother found a law firm in another place that needed a paralegal?

Yolanda didn't want to ___________.

Many Arctic animals have different coats in different seasons. In winter, their coats are white, so they are less easily seen against the snow. In summer, when the snow has melted, their coats are brown or grey, so they blend with rocks and plants.

Their coats _______ them.