The radical in this question is OH.
The reason this will be a radical, is that the definition of a radical is the presence of an unpaired electron. This causes the radical to be unstable, desperately wanting to do something with the free electron that it has.
Oxygen has a charge of 2-, and Hydrogen has a charge of +1. When you pair them, you end up with a net charge of 1-, which is the presence of that unpaired electron. It will usually be written as: 
Answer: The question is not well stated.
It should be choose the false statement from the options.
The correct answer is option C.
Fossils are not formed when organisms are preserved in recrystallized limestone called marble.
Explanation:
Fossils refers to remains of ancients organisms either plants or animals that have been preserved using a natural means. Fossils can be formed when of plants and animals and get buried during sedimentation or are buried by a lava flow or travel over gravel and leave imprints.
Examples of fossils include bone,shells, wood, coal,oil, DNA segment, objects preserved in Amber e.t.c.
They are use for historic studies, decorations , tourist attractions e.t.c.
<h3>Producers</h3>
Explanation:
Producers are autotrophic organisms capable of producing complex organic compounds from simple inorganic molecules through the process of photosynthesis ( using light energy) or through chemosythesis (using chemical energy).
Examples are green plants, small scrubs, phytoplankton, algae
Answer:
If the newly formed metamorphic rock continues to heat, it can eventually melt and become molten (magma). When the molten rock cools it forms an igneous rock. Metamorphic rocks can form from either sedimentary or igneous rocks.
Explanation:
