<span>because they are to close to the bottom of the food chain.in order for the survival of the species,when they reproduce, they do so in the millions so only a few of the progeny will be bound survive sometimes.</span>
<u>At low light levels, green leaves are most efficient at photosynthesis. On a sunny day, however, there is essentially no difference between red and green leaves' ability to trap the sun's energy.</u>
