The study pushes back the clock on the origin of Earth's water by hundreds of millions of years, to around 4.6 billion years ago, when all the worlds of the inner solar system were still forming. Scientists had suspected that our planet formed dry, with high-energy impacts creating a molten surface on the infant Earth.
Answer: 4.6 billion years.
Answer: Respiratory system, Excretory system, and Endocrine system.
Explanation:
Homeostasis is the process through which several organ systems work to maintain a stable internal environment in the body. There are three organs of the body which ar eaccurately maintained by homeostasis:
Respiratory system: High carbon dioxide content in the blood triggers faster breathing. Most frequently, the lungs exhale, which quicker extracts carbon dioxide from the body.
Endocrine system: High blood sugar content causes insulin release by an endocrine gland called pancreas. Insulin is a hormone which helps the cells absorb blood sugar.
Excretory system: A low blood level of water causes kidney accumulation of water. The kidneys contain more concentrated urine, so less water from the body is lost.
Hence, three critical areas are respiratory system, excretory system, and endocrine system that are accurately maintained by homeostasis.
The cranium bones are held together by fixed joints called sutures.
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Answer:
In three domain system Eukarya includes organisms from more than one kingdom
Explanation:
Of the biological taxonomy, domain is one of the rankings that keeps living beings organized. It is the highest ranking of taxonomy. Eukarya is the domain that contains organisms that are eukaryotic. These organisms has cells that has membrane bound organelles and a nucleus in it.
This domain includes more than three kingdoms. These domains are- Animalia, Fungi, Plantae and Protists. The organelles that belonged to this domain are called Eukaryotes.
