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.
Answer: <u><em>50/50 chance </em></u>
Explanation: children get 50% of their genes from mom and dad.
if mom can theres a 50% chance, if the man cannot theres a 50% chance he kid cannot.
Answer:
Explanation:
Sounds are wave. They are made through vibrations that travels or moves in the air.
Example-Bell rings- sounds gotten when a bell is ringed.
Spectogram is a way in which the strength of loudness can be represented with time visually. Example of spectogram
spectrogram(x) - It returns the Fourier transform of the input signal, x.
Spectogram x, window- This uses windows to separate signals into segments.
Spectogram, window, Nover lap - This make us of nover lap between adjoining segments.
is there a picture near the question?
