GEOLOGY

Detailed explanation-1: -The fossil record is considered to be incomplete because fossilization is a very rare phenomenon. Most organisms decompose quickly after their death, and their remains dispersed. In order for fossilization to occur, the remains have to be covered by sediments and stay undisturbed for thousands of years.

Detailed explanation-2: -We expect the fossil record to be incomplete for all of the following reasons EXCEPT:-All biomolecules, including lipids and pigment molecules, decay immediately after death.

Detailed explanation-3: -The fossil record will always be incomplete because most organisms never fossilize; softbodied organisms, for example, seldom leave fossils, and organisms that decompose or are eaten by scavengers will not leave fossils.

Detailed explanation-4: -Gaps in the Fossil Record Because not all animals have bodies which fossilize easily, the fossil record is considered incomplete. The number of species known about through the fossil record is less than 5% of the number of species alive today.

Detailed explanation-5: -They may result from non-deposition, non-preservation, metamorphism or erosion. The other varieties of gaps are both artificial. Imaginary gaps often result from incorrect beliefs in directed gradual evolution and are defined by rapid morphologic jumps.