Corn seeds were germinated in a dark room. Not one of the seedlings was green. When placed in the light, 75 percent of these seedlings turned green.
Which conclusion about chlorophyll production in corn plants can most reasonably be drawn from this information?

A) Light is the only factor that controls the production of chlorophyll.
B) Darkness is the only factor that prevents the production of chlorophyll.
C) Light and some other factor are necessary for chlorophyll production.
D) Light and vitamins are necessary for chlorophyll production.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls

the answer would be..

b. sucking

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.