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
"B. organisms that use the same resource" is destined to cause the most competition between those organisms, since resources are scarce and almost always limited.