What is the meaning of front?

the forward edge of an advancing mass of air.

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Explanation:

because the light is a great source of energy for the plants to survive. (i hope this )

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.