Answer:
They have the same number of electron energy levels.
They transition from a metal to noble gas.
Explanation:
Periods in the periodic table of elements refer to elements in the same row. All the elements in a certain row of the periodic table;
have the same number of electron energy levels.
transition from a metal to noble gas.
4. the nervous system uses electrical impulses to send messages through neurons while endocrine glands use hormones to send messages
5. Hormones are released from the endocrine glands
6. a. neck
b. Chest
7. help regulate important functions, such as growth, blood pressure and reproduction; it is small and small and bean shaped.
8. produces hormones that regulate the body's metabolic rate controlling heart, muscle and digestive function, brain development.
9. regulate your metabolism, immune system, blood pressure, respond to stress etc.
10. “enzymes” - break down sugars, fats, and starches
11. cells are unable to use glucose (can’t break down sugar to use as energy)
They are totally different the Inner core is solid and hotter is made of iron, the outer core is liquid the and is made of iron and nickel
Earth contains huge quantities of water in its oceans, lakes, rivers, the atmosphere, and believe it or not, in the rocks of the inner Earth. Over millions of years, much of this water is recycled between the inner Earth, the oceans and rivers, and the atmosphere. This cycling process means that freshwater is constantly made available to Earth's surface where we all live. Our planet is also very efficient at keeping this water. Water, as a vapor in our atmosphere, could potentially escape into space from Earth. But the water doesn't escape because certain regions of the atmosphere are extremely cold. (At an altitude of 15 kilometers, for example, the temperature of the atmosphere is as low as -60° Celsius!) At this frigid temperature, water forms solid crystals that fall back to Earth's surface.
Many people live faraway from freshwater sources. They need to carry their water home.
While our planet as a whole may never run out of water, it's important to remember that clean freshwater is not always available where and when humans need it. In fact, half of the world's freshwater can be found in only six countries. More than a billion people live without enough safe, clean water.
Also, every drop of water that we use continues through the water cycle. Stuff we put down the drain ends up in someone or something else's water. We can help protect the quality of our planet's freshwater by using it more wisely.
<u>Any of five chemical substances that are not metals and that combine with hydrogen to form strong acid compounds from which simple salts can be made</u>
