Answer:
We breathe out carbon dioxide
This process is called genetic engineering. It is a type of genetic modification wherein engineers can examine the dna<span> of a plant and can add a foreign gene or genes to the genome of an organism. The gene holds information that will give a trait to the organism.</span><span> </span>
After all this info you have given me, the correct one is Keystone species. As defined in sources like National Geographic, <span> These are types of plants or animals that play a unique and crucial role in the way an ecosystem functions. Without </span>keystone species<span>, the ecosystem would be dramatically different or cease to exist altogether. I hope this helps you a lot </span>
C: they convert dead organic compounds into reusable organic compound
Answer:
9:enforcement terrorism, 10:true,11:true