Answer:
Option A) Simple Prokaryotes.
Explanation:
- The first life that existed on Earth was the single-celled microbes who lack a well defined nucleus and are known as Prokaryotes
- They existed on Earth for almost four billion years ago.
- In Prokaryotes "Pro" means before and "Karyon" means nucleus which means they lacked nucleus and many other cell organelles that complex structures have.
- They are single celled organism adaptive of living in earth older environment.
Result: Simple Prokaryotes was the first life on earth.
DNA and RNA are both <span>molecules that carry genetic information and are made up of nucleotides.
I hope this helps!</span>
Due to the theory of continental drift, continents and landmasses can move apart and together on plates. This particular case has the fossils dating back to approx. 300 mya, when there was the supercontinent Pangea. During this time, all modern continents were squished together, allowing for all of the continents mentioned in the question above to be connected, in turn allowing for the Glossopteris plant to grow and fossilize on all of the continents.
Answer:
One method used by newborn mammals to generate heat is referred to as nonshivering thermogenesis. This method utilizes a protein channel called <u>thermogenin</u> which is present in high levels inside the mitochondria of <u>brown adipose tissue.</u>
Explanation:
Thermogenin forms a proton channel in the inner mitochondrial membrane in the brown adipose tissues. Most of the newborn mammals have these brown adipose tissues. In these tissues, the oxidation of nutrients do not produce ATP but generate heat. The heat is used by the newborn to maintain the warmer body temperature. The process is called nonshivering thermogenesis.
