If a seed did not have cotyledons, what would happen?

Average annual precipitation and are the two major features that define the biomes on earth.

Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?

How do living things obtain phosphorus