Answer:
circulatory system is the answer
Answer:
The oxygenated blood enters into the heart by pulmonary veins into the left auricle, then the left ventricle. Then this RBC enters the aortic valve and moves upward.
It enters the aorta and from the aorta to aortic vessels. From aortic vessels, the blood goes to descending aorta. This supplies RBC to different tissue parts.
From descending aorta the blood flows to iliac arteries which are further branched into several arteries, which supply blood to lower part of the body i.e. legs, pelvis.
The subclavian artery provides blood to hands and shoulders, hands. Left and right carotid arteries supply blood to the brain from the heart.
Refer to attachment for your answer
A complex assemblage of animals, plants, and their environment through which materials and energy move is known as ecosystem.
<h3>What is a ecosystem?</h3>
All the organisms that live in an ecosystem are present, along with their physical surroundings. Through energy flows and nutrient cycles, these biotic and abiotic components are interconnected. Plant tissue absorbs energy from the system through photosynthesis. Animals contribute significantly to the flow of matter and energy through the system by eating plants and one another as well as.
Additionally, they affect the biomass levels of the microbial and plant communities. Decomposers help to promote nutrient cycling by transforming nutrients stored in dead biomass back into a form that can be easily utilized by plants and microbes. They do this by consuming dead organic matter and releasing carbon back into the atmosphere.
To learn more about ecosystem with the help of given link:
brainly.com/question/7413811
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