2. Scientists observe several strata that are tilted at an angle. What most likely caused the tilting?
A. The strata were deposited at an angle.
B. Fossils were deposited within each stratum.
C. Thepstrata were moved after they were deposited.
D. The strata were deposited in a small area.

Question

Scientists observe several strata that are tilted at an angle. What most likely caused the tilting?

A. The strata were deposited at an angle.

B. Fossils were deposited within each stratum.

C. The strata were moved after they were deposited.

D. The strata were deposited in a small area.

c) The strata moved after they were deposited

Explanation:

Strata can be defined as a layer or layers of sediments, sand e.t.c. that have been deposited at a particular area or land on the earth surface thereby leading to the formation of sedimentary rocks. Strata possesses distinct features that separates it from other layers in the rock.

Strata in rocks occur in an horizontal form or horizontally. If the strata or layers of the rocks look tilted it is because strata was moved after it was deposited.

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.