Question

which of the following were benefits to algae in the early oceans of earth, compared to the first plants that colonized land? 1. no scarcity of water 2. less solar damage to tissues 3. the need for structural support 4. more plentiful dissolved carbon dioxide 1, 2, and 3 only 1 and 2 only 1, 2, and 4 1, 2, 3, and 4

Explanation:

• Oceans have abundant water, so algae have no water scarcity (1 is correct).
• Water filters out some harmful solar radiation, reducing solar damage to algae tissues (2 is correct).
• Algae in water don't need as much structural support as land - plants (3 is incorrect).
• Oceans have more dissolved carbon dioxide for algae's photosynthesis (4 is correct).

Answer:

1, 2, and 4