When does the Mitosis-promoting factor (MPF) Cyclin concentration decline during a typical cell cycle in clam eggs? A. when the cells grow larger
B. when DNA is synthesized
C. when haploid gametes are produced
D. when the cell nucleus divides

D

When the cell nucleus divides

Explanation:

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 answer is b. glad to .