Notes: Scientist helping a city design a new zoo would observe the natural habitats of organisms that will be in the zoo before designing the new zoo habitat.

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A DAY IN THE LIFE OF CHIRS

Like all humans, Chris has several different body systems that help her do all the things a human can do. Use what you know about body systems to answer these questions.

Notes: The skeletal system gives Chris’s body its shape and support and helps to move and protect

it.

Notes: In gym class, Chris uses the muscles in her arms to throw the basketball into the basket. One job

of these muscles is to hold the bones together.

Notes: The intestines, salivary glands, and stomach are organs of the digestive system. The

heart is not an organ in the digestive system?

(a) heart

(b) intestines

(c) salivary glands

(d) stomach

Notes: Five minutes into a running race, the circulatory system reeves up and the heart pumps more blood to the legs.

Notes: Ten minutes into the race, the students are perspiring or sweating. The

excretory system is now involved.

Excretory