C. can absorb food directly from the enviornment
There are multiple characteristic that all dinosaurs shared. Some of the synapomorphies include:
- Vertebrates; skeletons with back bones that surrounds a nerve cord.
- Amniotes; specially adapted for life on dry land.
- Diapsids; two holes located above and behind the eye sockets on each side of the skull.
- Archosaurs; antrobital ferestra, a hole between the nasal hole and the eye socket hole.
But still all of this doesn't separate them from all others, what is unique to them is that all of the 'true dinosaurs' were land dwellers.
Answer:
cardiac
Explanation:
An electrical stimulus is generated by the sinus node (also called the sinoatrial node, or SA node). This is a small mass of specialized tissue located in the right upper chamber (atria) of the heart. The sinus node generates an electrical stimulus regularly, 60 to 100 times per minute under normal conditions.
The variety of non-living and living organisms
Mitochondria perform cellular respiration, a process that
uses oxygen, generates carbon dioxide, and produces chemical energy for the
cell. The answer is False. Mitochondria
use oxygen to generate energy and are thought to have evolved from aerobic
bacteria nevertheless, mitochondria cannot function for long when isolated from
the cell because they are parasites.Mitochondria contain their own genome, are
able to duplicate, and actually divide on a different time line from the rest
of the cell.
