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:
drumlin
Explanation:
<u>Drumlin</u>
It is present in the streamlined scenery in the central lowland of the Scotland . The drumlin is in the form of a small hill , with steep slopes , summit at the up - ice end and tending an egg shape .
<u>Drumlin always occurs in groups and is rarely found in single .</u>
And the ends are tapered of each of the hill that points in the direction of the glacier flow .
Answer:
The Incas had to create flat land to farm since they lived in the mountains. They did this by creating terraces. Terraces were carved steps of land in the mountainside.
Explanation:
Well some can be the types of food they eat
