Answer: Looks similar to a smoky quartz.
The answer is the fourth one: Decrease in the fertility of the soil. If you just do crop rotation (harvesting a crop then planting the same type on the same soil) for many years, the soil just loses fertility because of so many of the same plants just using and depleting the fertility from the soil, making the soil less nutritious for the crops.
Answer:
The below options will complete the question
Select one:
a. Gap repair synthesis
b. Mismatch repair
c. Direct repair
d. Nucleotide excision repair
Our answer is surely A.
a. Gap repair synthesis
Explanation:
Alleles of gene B differ by 6 bps and are seeming close to each other among the 1123 bp within the particular gene, favouring the gap repair synthesis.
In the gap repair synthesis, a double stranded break is formed at a homologous chromosome with a small part of the gene or the 6 bps of the recessive allele
being digested away.
Strand invasion and a D-loop formation is followed by the new region being occupied by the dominant B allele to yielding dominant B allele in both chromosomes.
The gap repair synthesis allows the 6bps to be converted to the dominant B from the recessive b when in proximity/being close together.
Explanation:
The main function of the respiratory system is the exchange of oxygen and carbon dioxide. Inhaled oxygen penetrates the lungs and reaches the alveoli. The layers of cells lining the alveoli and surrounding capillaries are arranged occupying the thickness of a single cell and are in close contact with each other. This barrier between air and blood is approximately one micron thick (1 / 10,000 cm). Oxygen quickly crosses this air – blood barrier and reaches the blood that circulates through the capillaries. Similarly, carbon dioxide passes from the blood into the alveoli, from where it is exhaled outside.
Answer:
Seafloor spreading helps explain continental drift in the theory of plate tectonics. ... Plates that are not subducting are driven by gravity sliding off the elevated mid-ocean ridges a process called ridge push. At a spreading center, basaltic magma rises up the fractures and cools on the ocean floor to form new seabed.
Explanation: