Answer:
They evolved after the seedless vascular plants.
Explanation:
- The gymnosperms were the first seed plants to have evolved some about 382.7 million to 358.9 million years ago in the Devonian period.
- They were the ancestor of the seed plants like the heterosporous, earlier gymnosperms were pteridosperms or seed ferns. The vascular plant's particular ferns consist of tissues that don't make flowers or seeds but have unicellular pores.
The diaphragm is the large dome-shaped muscle that rests right under the lungs and separates the abdominal cavity from the thoracic cavity. The contractions of the diaphragm are what truly facilitate the movement of air in and out of the lungs. The contraction of the diaphragm, or breathing in, leaves more room in the chest cavity for the lungs to expand as the diaphragm "tightens". The expanded lungs are filled with oxygen-rich air which is then is diffused through capillaries to different parts of the body. The process of breathing out occurs when the diaphragm relaxes, slowly resuming its position its original position in the chest cavity. When relaxing, carbon dioxide is forced out of the lungs.
Hope this helped! :)
THe population will become a separate species over time. This is speciation.
The procedure is called <span>Sigmoidoscopy</span>
I think you forgot to give the options along with this question. I have researched with the question and have found the options as well. Hope it helps you in your study. Among the choices that i have come up with, the option that says that temperate deciduous forests are less open than tropical rain forests.