The placenta is the site of exchange for: a) Nutrients and mucus between the mother and the fetus b) Milk and waste between the mother and the fetus c) Nutrients and waste between the mother and the father d) Nutrients and waste between the mother and the fetus

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.

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully

answer: dna

because all cells have genes