Evolution of photosynthesis era around 2 billion years ago. Modern photosynthesis in plants and most photosynthetic prokaryotes is oxygenic. Oxygenic photosynthesis uses water as an electron donor, which is oxidized to molecular oxygen () in the photosynthetic reaction center. Timeline of Photosynthesis on Earth Several groups of animals have formed symbiotic relationships with photosynthetic algae. These are most common in corals, sponges and sea anemones. It is presumed that this is due to the particularly simple body plans and large surface areas of these animals compared to their volumes. In addition, a few marine mollusks "Elysia viridis" and "Elysia chlorotica" also maintain a
Need for Speed: Undercover that sort. Chase Linh will tell you [what] you need to do to get on the inside of a racing group in order to get dirt on them, and then after a race she'll say 'We have enough, let's move in.' [But you're left asking: How did that help at all?]" Finally, the in-game frame rate received little praise, and GameSpot particularly criticized the PS3 version for this problem resulting in a lower score on the platform compared to the Xbox 360 and PC versions. "Need for Speed: Undercover" has sold 1.4 million copies in the United States. Need for