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Main Idea 1: All Levels of Life Have Systems of Related Parts

Main Idea #4: Living Things Change Over Time

System - an organized group of related parts that interact to form a whole.

You are part of an ecosystem, which is a physical environment with different species that interact with one another and nonliving things.

Adaptation - an inherited trait that gives an advantage to individual organisms and is passed on to future generations.

Systems Biology

A systems biologist is interested in networks and pathways that sustains life. It's a relatively new field of biology made possible through technology.

How can nonliving elements affect the ecosystem?

Climate

Altitude

Pollution

Sunlight

The Goby Fish and Piston Shrimp

1.2: Unifying Themes of Biology

Scanning this section in the book (1.2), which themes are related to this pair?

Main Idea 3: Organisms Must Maintain Homeostasis to Survive Diverse Environments

Homeostasis - maintenance of constant internal conditions within the organism

This can mean temperature, blood sugar, acidity, and other conditions. Behavior can also be involved in homeostasis.

Main Idea 2: Structure and Function are Related

How does the polar bear maintain homeostasis?

Temperature Regulation in the Human Body

Polar bear has black skin, which absorbs heat more readily. It has hollow transparent hair, which helps it retain body heat.

It also has fat deposits to keep it warm.

For example, in the human body, red blood cells and brain cells have different shapes, and therefore different functions.

How is structure related to function in the case of bats?

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