Answer:
Option D, How different vitamins and proteins cause genetic defects
Explanation:
Maximum opportunity for research is in option D because it covers all the three research scopes mentioned in option A, B and C
Vitamins and proteins will affect the dam, sire and offspring and all these three cases can be studied by studying the role of vitamins and proteins in genetic defects in nutshell.
Hence, instead of researching on three option i.e A, B and C individually , One can research on option D only.
Answer:
Both made products from other continents available to the peoples along the route.
Explanation:
This is true due to the fact that majority of goods and products from other continents passes through those routes. As it passes along, it is now possible for other people to be able to purchase such products thereby making it available for them.
Https://en.wikipedia.org/wiki/Biological_organisation hope that helps! :)