Answer: The process of producing mature sperm is called spermatogenesis. Sperm are produced in the seminiferous tubules of the testes and become mature in the epididymis. ... Spermatogonia lining the seminiferous tubule undergo mitosis to form primary spermatocytes, which are also diploid.
Explanation:
Answer: low temperature, high-pressure
Faults is a fracture in a rock that formed by the rock-mass movement. The fracture is made because the rock rigidity or friction are preventing the movement, make the pressure buildup until it enough to break the rock. This condition will be easier in low temperature and high-pressure condition.
Answer:
A.Earth's early atmosphere lacked oxygen, which multicellular organisms need to break apart food
Explanation:
One important feature that led to the development of multicellular organisms was the rise of oxygen-producing photosynthetic bacteria. Prior to this development, the unicellular organisms (anaerobes) then present on Earth obtained energy from inorganic fuels.
However, with the presence of oxygen in the atmosphere, a shift was observed as organisms that could obtain energy from the reduction of energy became predominant. This unicellular aerobes later paved way for the evolution of multicellular aerobes.
Answer:
The correct answer is the option B. Hot spring
Explanation:
Hot springs are the spring of geothermally heated groundwater that is heated by the shallow intrusion of magma in volcanic areas. hot springs also are known as thermal spring which temperature is substantially high than the temperature of the surrounding area.
