By US Environmental Protection Agency

ISBN-10: 1428900047

ISBN-13: 9781428900042

Show description

Read or Download America's Children and the Environment PDF

Similar science studies books

Debra J. Housel's Science Readers - Life Science: Inside Ecosystems and Biomes PDF

Discover a number of the kinds of ecosystems and biomes during this interesting name that makes use of shiny photos, enticing charts and graphs, interesting evidence, and easy-to-read textual content to captivate readers from starting to finish! Readers could be enthralled as they know about such ecosystems and biomes because the tundra, grassland, barren region, temperate forests, rainforests, or even riparian and pelagic biomes.

Read e-book online Volcanoes (Pull Ahead Books) PDF

What's a volcano? What occurs while a volcano erupts? How can volcanoes be worthy? learn this e-book to find the solutions!

Additional resources for America's Children and the Environment

Example text

When I got cramps my doctor told me to eat more bananas. They are loaded with potassium. ” When you exercise you lose electrolytes in your sweat. Many sports drinks contain electrolytes to replace those lost when you sweat. Essential electrolytes So how do you send these messages around your body? The answer is electrolytes. Electrolytes are atoms or groups of atoms called molecules that have an electric charge. Most electrolytes contain minerals such as calcium, chlorine, magnesium, and potassium.

Electrolytes are atoms or groups of atoms called molecules that have an electric charge. Most electrolytes contain minerals such as calcium, chlorine, magnesium, and potassium. Without them, your brain would not know when your fingers were touching something hot. Your muscles would not respond by moving your hand away from the source of the heat. Hormones control the concentration of electrolytes in the body. Most of these hormones are made in the kidneys and adrenal gland. 37 MINERALS Chemical messengers Hormones are your body’s messengers.

Your skin, tongue, ears, and eyes are the machine’s sensors. These sensory organs send impulses along the nerves to report what they are feeling to the brain. Your brain is the control center of the body machine. The brain sends messages back and forth to all the different parts of the body, with instructions about what to do. Muscles also receive messages and are responsible for all the body’s movements. I 36 Body Talk Have you ever had a sudden muscle cramp in your legs? Cramps are usually harmless, but they hurt.

Download PDF sample

America's Children and the Environment by US Environmental Protection Agency


by Anthony
4.3

US Environmental Protection Agency's America's Children and the Environment PDF
Rated 4.31 of 5 – based on 9 votes