HELP!!

Which statement best describes the greenhouse effect?

A. It is a process by which plants are able to grow well in a warm, enclosed structure.
B. It is a process by which greenhouse gases block the sun’s light to penetrate the atmosphere.
C. It is a process by which greenhouse gases allow the sun’s light to penetrate the atmosphere but stop the heat from escaping.
D. It is a process by which prevailing winds bring moisture to the land, to the prevailing wind direction.

Which of the following accurately describes the correct order of events in the process of transpiration within a plant? a. water enters the roots, passes through the leaves, and leaks through the stem pores. b. water enters the roots, gets transported through the stem, and evaporates through the leaves. c. water is absorbed through the leaves, is transported through the stem, and nourishes the roots. d. water is absorbed through the leaves, nourishes the roots, and leaks through the stem pores.