Two different ecosystems, X and Y, were compared. Both ecosystems are the same size and both have the same climate. The results of the comparison are shown in the table below.  

Using the information in the table, which statements are a valid suggestion concerning X and Y?

1 A greater percentage of primary producers are likely to be consumed by primary consumers in X than in Y.

2 X could be a marine aquatic ecosystem and Y could be a terrestrial ecosystem.

3 Energy losses between trophic levels are likely to be lower for X than for Y.

4 There is likely to be a higher rate of photosynthesis and production of organic matter in X than in Y.