If you "run the clock backwards" using the Friedmann equations, you can avoid a singularity; you just need the pressure and energy to behave in the right way when the Universe was very hot and dense. The catch is that "the right way" in this case means that ρ+3p<0; in other words, either the energy density or the pressure (or both) have to be negative. No conventional forms of matter are known that satisfy this inequality, so unless something really strange was going on in the early Universe, there must have been an initial singularity. (Or, more plausibly, there was a time in the early Universe where the spacetime curvature was sufficiently large that the laws of GR as we know them did not apply.)
Explanation:
Answer:
it provides the wing's downstroke
Explanation:
the function of the large, sheetlike pectoralis muscles of a bird is that it provides the downstroke of the wings.
Answer:
Population growth is a problem.
Explanation:
Population is a problem because we have to worry about if we have enough resources to support them and there has been a scientific study done that proves more carbon dioxide is put into the air which doesn't help with air pollution.
It increases the average household income by 36%
Answer:
4. Haiti
5. Creoles
Explanation:
Hurricane Tranblemannte 2010, Hurricane Matthew 2016
Haitian Creole is a mix of African and French languages. Common creoles include Haitian Creole, Louisiana Creole, and Mauritian Creole.
