To do this, they needed to acquire a very special internal organelle, called the chloroplast. where did they acquire this internal organelle? (hint: it's the same place we got our mitochondria)

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.

the fossil record provides evidence of a common ancestor to many species.

a compound light microscope is used to magnify objects in steps.  

hope it