Answer:
The femur contains yellow marrow, but the sternum does not. The femur makes red blood cells, and the sternum makes white blood cells. The femur contains compact bone, and the sternum does not.
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Answer:
humans had more developed 'social' brains than Neanderthals, which enabled us to colonize new habitats and adapt to climate fluctuations
Explanation:
A more developed brain is considered to be an adaptive advantage that enabled early humans to leave Africa and colonize new habitats. Modern humans are able to adjust to new environments, situations, and socialize with other humans because the brain is a social organ. Although Neanderthals were able to occupy an important area of Europe, H. sapiens could colonize faraway lands, migrating into tropical forests, deserts, and glacial lands (colder areas than those colonized by Neanderthals). These early humans formed social groups which enabled them to find food more easily, thus greatly increasing their chances for survival.
Answer: The Earth's axis rotates (precesses) just as a spinning top does. The period of precession is about 26,000 years.
Explanation:
over 70 percent of water goes in agriculture irrigation.
In most regions of the world, over 70 percent of freshwater is used for agriculture. By 2050, feeding a planet of 9 billion people will require an estimated 50 percent increase in agricultural production and a 15 percent increase in water withdrawals.
Economic freedom, efficiency, equity, security,full employment, price stability and growth .
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