Answer:
Mouth is the first portion of the alimentary canal that receives food and produces saliva.
Answer:
The answer is D: Recombinant DNA is produced by pasting together DNA from two sources
Explanation:
Recombinant DNA, or rDNA, is made by pasting together 2 halves of DNA strands from different sources
I believe A. Nitrogen is the most abundant Gas.
Plants go through a process called photosynthesis where they take in carbon dioxide from the atmosphere (as well as water and sunlight), and they turn it into oxygen (so we can breathe) and glucose (sugar)!
