Crassulacean acid metabolism, an Uncommon card

The card carries these facts from its Wikipedia article.

• In a plant using full CAM, the stomata in the leaves remain shut during the day to reduce transpiration, but they open at night to collect carbon dioxide and allow it to diffuse into the mesophyll cells.
• The CO2 is stored as four-carbon malic acid in vacuoles at night, and then in the daytime, the malate is transported to chloroplasts where it is converted back to CO2, which is then used during photosynthesis.
• The pre-collected CO2 is concentrated around the enzyme RuBisCO, increasing photosynthetic efficiency.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Crassulacean acid metabolism article was read about 41,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 74 and blocks with 79: each hit it takes is cut by 32 %.

Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.

The cards just above and just below Crassulacean acid metabolism in the power ranking, all domains together.