Which best explains the reason for daily high and low tides? a. warm, less-dense water rises, moving cold dense water toward the shore. b. volcanic activity on the ocean floor causes water to swell. c. the moon's gravitational pull on earth causes water to bulge on two sides of the earth. d. earth is tilted on an axis, causing water to spread unevenly across the planet.

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality