Answer:
They work together as open systems to cycle matter through ecosystems. They work independently as closed systems to cycle matter through ecosystems. They work together as open systems to move matter to living and nonliving parts of Earth
The smallest structural and functional unit of an organism is a cell.
It is called <span>Osteoclasts.</span>
Answer:
A long tube-like organ that connects the stomach and the large intestine. It is about 20 feet long and folds many times to fit inside the abdomen. The small intestine has three parts: the duodenum, jejunum, and ileum. It helps to further digest food coming from the stomach.
Explanation:
please brainleist my answer
The most appropriate answer would be d. Serotonin and norepinephrine
The mechanism that cause depression is not clear, but it is known that the patient has lower level of serotonine, norepinephine and dopamine. The primary drug used for depression is selective serotonine reuptake inhibitor(SSRI), so you could infer that serotonine level is lower in those patient. There is also serotonine norepinephrine reuptake inhibitor(SNRI) drug used for depression.
