<span>It is a mixed-tissue tumor.</span>
Answer:
1. Anyone can work on selective breeding.
2. It provides improvements to the plants or animals.
1. It may lead to a lack of variety in plant or animal species.
2. Genetic mutations are still going to occur.
One cardiac cycle is .8 seconds. A complete heartbeat is produced in one cardiac cycle. <span>The period of time that begins with contraction of the atria and ends with ventricular relaxation is known as the cardiac cycle. The period of contraction that the heart undergoes while it pumps blood into circulation is called systole.</span>
B. They become extinct
Please mark as brainliest if this helped!
Answer:
Lungs and Endoskeleton.
Explanation:
Gills helps it live in water, and Scaly skin doesn't really apply
