Frozen Frogs & Long Live the Tree

"Frozen Frogs" The author wrote this selection most likely to explain —

• the reasons scientists have been unsuccessful at freezing organs

• how the wood frog survives in harsh conditions

• how wood frogs hibernate or migrate to warmer climates

• the scientific studies that involve wood frogs

"Frozen Frogs" In paragraph 2, the word vital means —

• fortunate

• common

• necessary

• permanent

"Frozen Frogs" What can the reader conclude about wood frogs from learning that they hop away after thawing out?

• Wood frogs are not truly frozen during winter months.

• Wood frogs have a special process for storing energy.

• Wood frogs have a unique ability to know the temperature.

• Wood frogs are not harmed by the body-freezing process.

"Frozen Frogs" Which of these ideas is supported by information in paragraphs 5 and 6?

• Water helps the wood frog thaw its limbs.

• The temperature of its surroundings determines how long a wood frog stays frozen.

• The time it takes for a wood frog to thaw is equal to the time it takes for the frog to freeze.

• The wood frog thaws faster than its surroundings.

"Frozen Frogs" The diagram of the wood frog helps the reader understand -

• which features can be used to identify a wood frog

• which characteristics make wood frogs able to freeze

• which temperatures the wood frogs are able to survive in

• which studies involving wood frogs have been performed

"Long Live the Tree" The reader can infer that the long life span of bristlecone pines is mainly a result of —

• their location in the Great Basin

• their root systems and outer wood

• the actions of park rangers

• the soil of the White Mountains

"Long Live the Tree" Which words from paragraph 2 help the reader understand the meaning of thrive?

• contains little water

• can damage

• battered by strong winds

• grow well

"Long Live the Tree" What is the main idea about bristlecone pine trees presented in the selection?

• They are found in mountainous areas.

• They are able to adapt to extremely harsh conditions.

• They are protected by park rules.

• They provide scientific clues about their environment.

"Long Live the Tree" The information in paragraph 4 helps explain why —

• many bristlecones are found in the White Mountains

• droughts in the White Mountains can affect the bristlecones

• some bristlecones can allow a part of themselves to die

• insects succeed in getting through the thick bark of bristlecones

"Long Live the Tree" The bar graph included with the selection helps the reader better understand —

• the factors that allow the bristlecone to live for so long

• that the life spans of trees can vary greatly

• why some regions produce trees that live as long as the bristlecone

• that other trees live in an environment similar to that of the bristlecone