In plants, photosynthesis occurs mainly within the leaves. Since photosynthesis requires carbon dioxide, water, and sunlight, all of these substances must be obtained by or transported to the leaves. [ Carbon dioxide is obtained through tiny pores in plant leaves called stomata. Oxygen is also released through the stomata. Water is obtained by the plant through the roots and delivered to the. leaves through vascular plant tissue systems. Sunlight is absorbed by chlorophyll, a green pigment located in plant cell structures called chloroplasts.
Super Bowl XLIX, a thrilling contest that came down to an unbelievable interception in the fourth quarter, has become the most watched show in television history. According to numbers released by the ratings agency Nielsen, 114.4 million Americans tuned in to watch the Patriots beat the Seahawks 28 to 24 on Sunday.
Some specifics: FNC has been the most-watched news channel for 39 consecutive quarters in total viewers for both Total Day and Primetime since 1Qâ02. Fox News also secured the top 12 cable news programs in total viewers and nine out of the top 10 programs in the 25-54 demo. Perhaps most stunning, in both primetime and total day, Fox News beat CNN and MSNBC combined in total viewers.26, CNN was #29 and HLN was #30. During total day, FNC was the seventh most-watched cable network, meanwhile CNN was #27, HLN was #29 and MSNBC was #32.