The anemia resulting from a deficiency of either vitamin B 12 (cobalamin) or folate is caused by a disruption in DNA synthesis of the blast cells in the bone marrow that produces very large abnormal bone marrow cells called megaloblasts.
O True O False

True.

Explanation:

Megaloblastic anaemia is a medical condition in which the bone marrow which produce red blood cells produces very large, abnormal, unstructural cells called megaloblasts. This result from disruption in DNA synthesis. It is a nutritional defficiency which is due to inability of the body to absord nutrients. This is caused by deficiency of vitamin B12 and folate. The symptoms include dizziness, increase heart rate, e.t.c

It can be cured by taking dietary supplements of vitamin B12 and folate depending on the root cause.

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

hope this .. .

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.