The nitrogen gets into our bloodstream and expands
(Core )composed of: the core is made almost entirely of metal—specifically, iron and nickel.
Conditions: The temperature at the inner core's surface is estimated to be approximately 5700 K which is about the temperature at the surface of the Sun.
Answer:
C
Explanation:
The experimental and control group differ by <u>only one factor</u> for a scientist, and that is the independent variable.
<em>A scientist will always try to isolate the effects that are due to a variable and keep every other variable constant. The variable that is manipulated in order to measure its effect is known as the independent variable. A control group usually forms the basis for measuring the effects of the independent variable. While the independent variable is varied in experimental groups, it kept at the zero level for the control group.</em>
The correct option is, therefore, C.
Strong winds enter the house through the open door, and the husband tells the wife to "Gae [go] out and bar the door."
She, in summary, tells him to forget it. She's the one who is busy working, not him.
They make a pact that whoever speaks first will be the one to have to close and bar the door. They are both stubborn, and stubbornness is really what the poem is about. You could say stubbornness is the theme of the poem.
Answer:
What did researchers learn from terra preta?... Because terra preta is loaded with so-called bio-char -- similar to charcoal -- it also can pull substantial amounts of carbon out of the increasing levels of carbon dioxide in the Earth's atmosphere, helping to prevent global warming.
How is bio-char different from the traditional Amazonian method of creating terra preta? Terra preta owes its characteristic black color to its weathered charcoal content, and was made by adding a mixture of charcoal, bone, broken pottery, compost and manure to the low fertility Amazonian soil. ... Terra preta soils were created by farming communities between 450 BCE and 950 CE..
The BBC's Unnatural Histories presented evidence that the Amazon rainforest, rather than being a pristine wilderness, has been shaped by man for at least 11,000 years through practices such as forest gardening and terra preta.
