The graph below shows the relationship between maternal age and the incidence of children born with down syndrome (a condition that results in an individual having an extra chromosome 21). what conclusion is best supported by the data?

1 point
a.
there is no risk of down syndrome in children born to mothers under age 34.
b.
the risk of down syndrome increases dramatically in children born to mothers after age 34.

c.
the risk of down syndrome doubles in children born to mothers for each year over the age of 34.
d.
there is no correlation between the number of down syndrome births and age.

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion