Fill in the blanks with suitable words. (a) — sun rises (b) — the east. It is (c) — source of light and heat. Without sunlight, life (d) — not exist on earth. Farmers depend (e) — sunlight to grow crops. Sunlight also helps us (f) — get vitamin D. Too much exposure (g) — sunlight can be harmful, (h) — we must protect ourselves. The sun is (i) — star among billions. It provides energy (j) — the entire planet.