Answer:
Scientist 1
Explanation:
<em>The conclusion of scientists 1 is valid.</em>
Human activities such as burning of fossil fuels, agriculture, deforestation, etc. leads to the emission of carbon in the form of carbon dioxide into the atmosphere. <em>An increase in the population of a city will only lead to an increase in these activities and hence, an increase in the amount of carbon emitted into the atmosphere.</em>
Also, volcanic activities leads to the production of volcanic gases which is a mixture of carbon dioxide, oxides of sulfur, nitrogen, etc.
<u>However, an active volcano that is several miles away from the city might not be a major source of carbon in the air above a large city. The carbon dioxide produced from such volcanic activity thins out before reaching the city.</u>
Well the car and the flames are emitting carbon dioxide
The interstitial cells in the body produce testosterone for endocrine purposes. The seminiferous tubules' generation of spermatozoa constitutes the exocrine function.
<h3>
What are Endocrine Functions of Testes?</h3>
- The pituitary and hypothalamus regulate the amount of testosterone the testes make and secrete.
- The pituitary gland receives a signal from the hypothalamus to release gonadotrophic chemicals (FSH and LH). The production of testosterone is stimulated by luteinizing hormone. The hypothalamus warns the pituitary gland to produce less LH, which instructs the testes to lower testosterone levels, if too much testosterone is being produced.
- Boys' normal physical growth need testosterone. It is the principal androgen, which is a name for any chemical that promotes and/or supports the development of the male genitalia. Many of the processes that help a boy transition to manhood during puberty require testosterone, including:
- healthy growth of male genitalia
- growth of body and face hair
- reduction in voice volume
- Adam's apple development
To learn more about Endocrine Functions of Testes with the given link
brainly.com/question/14290574
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