Slope
slōp/
noun
1.
a surface of which one end or side is at a higher level than another; a rising or falling surface.
a difference in level or sideways position between the two ends or sides of a thing.
synonyms: gradient, incline, angle, slant, inclination, pitch, decline, ascent, declivity, rise, fall, tilt, tip, downslope, upslope, grade, downgrade, upgrade
"the slope of the roof"
a part of the side of a hill or mountain, especially as a place for skiing.
synonyms: hill, hillside, hillock, bank, sidehill, escarpment, scarp; More
verb
1.
(of a surface or line) be inclined from a horizontal or vertical line; slant up or down.
synonyms: slant, incline, tilt; More
2. DNA is important to carry genes or genetic materials of the parents
Answer:
The earliest time that life forms first appeared on Earth is at least 3.77 billion years ago, possibly as early as 4.28 billion years, or even 4.5 billion years; not long after the oceans formed 4.41 billion years ago, and after the formation of the Earth 4.54 billion years ago.
Explanation: