Answer:
Hi! The four most common elements in the human body are oxygen, nitrogen, carbon and hydrogen. Of course, the body contains trace amounts of other elements as well. :)
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Answer:
Question 1
vacuole
Question 2
ribosomes
Explanation:
The endocrine system regulates growth, metabolism, and reproduction through the production, secretion, and regulation of hormones, which act as cellular and organ 'messengers'. Key components include the hypothalamus and pituitary gland, and diseases often affect these components.
The body system that controls growth, metabolism, and reproduction through the use of hormones is the endocrine system. This system controls body processes through the production, secretion, and regulation of hormones, acting as chemical messengers that function in cellular and organ activity. It plays vital roles in growth, metabolism, and sexual development. For regulation, it uses hormones like the growth hormone (GH), which promotes protein synthesis and tissue building and the regulation of reproductive system by hormones from the pituitary gland, and the adrenal cortex.
Common human endocrine system diseases include thyroid disease and diabetes mellitus. The hypothalamus plays a crucial role in controlling the endocrine system, sending signals to the pituitary gland, releasing different hormones affecting other glands and cells, and thereby regulating various bodily functions.
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Answer: Pulmonary veins
The pulmonary veins bring oxygen-rich blood to the left atrium.
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Answer:
Green house gases are the type of gases present in the air which have the ability to trap heat of the earth's surface. Gases like carbon dioxide and methane are found naturally and are known to play an important role in earth's climate. If they are not found the earth' s climate would be too cold creating problem for survival of life on the earth.
These green house gases absorb the emit the radiation in the thermal infrared range. These gases act like a blanket and save earth surface from infrared radiation by absorbing them and prevent them from escaping out of the earth surface.
But now a days due to increased in the concentration of green house gases like carbon dioxide and methane due to pollution and deforestation causing a great problem called as green house effect which lead to global warming and it a great concern for all the people now a days.
Greenhouse gases refer to the gases, which are crucial to maintaining a suitable temperature for life on Earth. Examples are methane, carbon dioxide, and nitrous oxide.
Greenhouse gases such as water vapor, methane, fluorinated gases, and carbon dioxide trap the sunlight and raise the temperature of the Earth keeping it warm.
The gases are a concern for the environment and life on earth as in the absence of these gases, the Earth's climate will be extremely cold and chilly.
These gases act as a protective blanket, saving them from infrared rays and other harmful rays. Also, the increased emission of these gases is leading to global warming, which is one of the major threats to life on Earth.
Thus, greenhouse gases are essential but their increased emission is a major concern for the planet.
Learn more about greenhouse gases here: