Answer:
The correct answer is "Transgenics".
Explanation:
The missing options of this question are:
A. Artificial selection
B. Transgenics
C. Bioreaction
D. Recombination
The correct answer is option B. "Transgenics"
Transgenics is a term used to describe the artificial insertion of one or more DNA sequences to an organism that would normally not have it. In this example, the term transgenics applies to the cows that serve as hosts for the production of the spider silk. The process transgenics is what gives the name to terms such as "transgenic food", "transgenic plants" or "transgenic animals".
"A nephron is used to separate water, ions, and small molecules from the blood, filter out wastes and toxins, and return needed molecules to the blood."
https://biologydictionary.net/nephron/
they might conserve water
Juglar Vein
This vein drains blood from head to heart.
Sub-clavian Vein
This vein drain blood from shoulder to heart.
