<span>The correct word to fill the gap is "gene flow". Moreover, gene flow is the transfer of alleles or genes from one population to another. It can happen due to migration or immigration. When that happens a new genetic variants to the established gene pool of a particular species or population is created.</span>
Calcium is the #1 material needed for bone development
It is geothermal because solar heat is in the air not underground
The best answer is (1)
Fossil fuels are commercially available as an energy source.
They are very easy to find. More and more extractions of fossil fuels is going on everyday. With advancement in science and technology, the refineries and extraction procedures have improved a lot. This makes their availability even better.
Fossil fuels are also easily combustible. Most combustion engines need to be powered with little amount of fuel to produce large amount of energy. Very large amounts of electricity can be generated from fossil fuels.
Answer:
True.
Explanation:
Proliferative retinopathy may be described as a medical condition in which the new and weak blood start to form on retina and restores the blood supply. This condition may also develop in diabetic patient.
This is a diabetic microvascular disease that can affect the physiology of eyes. The individual has the threat to vision because new blood vessels grows on retina from the vitreous.
Thus, the answer is true.
