Animals Through Time

How can you figure out what the habitat used to be like where you live?

• Dig for fossils

• Ask an old person

• Look in the dictionary

• You can't, it's a mystery

Why do scientists think dinosaurs looked like big reptiles?

• Their skulls are similiar

• Their skin is similiar

• Their eggs are similiar

• All of the answers

How can a scientist tell how fast a dinosaur ran?

• The distance between their fossil footprints

• They recorded their time

• By digging up fossils

• By how big their fossil footprints are

Why do chickens today produce bigger eggs than chickens from a long time ago?

• People used selection to make chickens that lay the biggest eggs

• Because they eat healthier

• The eggs are NOT bigger

• Because the chickens today are smarter

Why are green anoles today better climbers than green anoles that lived a long time ago?

• Because only the best climbers survived and they had babies that were the best climbers.

• Because the brown anoles ate them all up

• Because they have had more time to practice climbing

• Because if they don't climb fast, they will be eaten

Scientists think that there used to be an ocean in the middle of the U.S. because...

• They found fossils of ocean animals underground there

• There is seaweed growing in Chicago

• They read a book that said so

• The soil is salty

Scientists found a whale in the middle of the desert because...

• Whales live in the desert

• Whales used to live in the desert

• There was a lake in the desert

• The desert used to be an ocean

One reason that scientists think that dinosaurs looked like reptiles on the outside is because...

• Reptiles also have 2 openings in their skulls

• Reptiles also eat meat and plants

• There is no fossilized fur

• Dinosaurs' blood was cold too

There are so many different kinds of dogs because...

• People used selection to make dogs with qualities that they wanted

• The dogs wanted to be different than one another

• The babies were different than their parents

• Dogs have a lot of babies

Animals that live in groups are less likely to...

• share

• feel lonely

• get eaten by predators

• survive when the environment changes