<span>The primordial germ cell in the embryo undergoes mitosis to produce a spermatogonial stem cell.
The spermatogonial stem cell undergoes mitosis. The new cells could either be stem cells or spermatogonium cells.
The spermatogonium undergoes mitosis to generate a primary spermatocyte.
*** Up until this point, all cells are diploid ****
The primary spermatocyte (diploid) undergoes MEIOSIS I to generate TWO haploid secondary spermatocytes.
Each secondary spermatocyte undergoes MEIOSIS II to generate a total of FOUR early spermatid.
The spermatid mature in the seminiferous tubule, and once they are completely mature they are released into the lumen.
Now called sperm cells, they pass into the epididymis, where they are stored until time to be released during ejaculation
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Answer:
Answer no 1
Location that experience seasonal sea water freezing have increased salinity in the surrounding seawater during that time.
When water freezes, it form sea ice which expel out salt into surrounding water and increase the salinity of surrounding seawater.
Answer no 2
Location that experience seasonal ice melting have decreased salinity in the surrounding sea water during that time.
Answer no 3
Sample A which has high salinity content and taken from Atlantic ocean represent just east of the Bahamas
Answer no 4
Sample B which has moderate to low salinity is represent off the West coast of Africa near the equator.
Answer no 5
Sample C which has high salinity content is taken from Red Sea.
Answer no 6
Sample D which moderate to low salinity content, is taken from Baltic Sea.
Answer:
Explanation:
human activities should no be more than the capacity of ecosystem
we should pay attention to carrying capacity of eco system
another one i don't no sorry for that
hope you like my answer and hope it helps you
Answer:
technically its everyone's but isn't at the same time
Explanation:
The UN Convention on the Law of the Seas states the different rights and regulations regarding specific nations’ rights to oceans. For instance, coastal states have jurisdiction over the 12 nautical miles off their coastlines, and 200 nautical miles are reserved for specific states to utilize the oceanic materials, living and nonliving, in their zone. This can include fishing, the mining of minerals but also includes the obligation to protect the ocean and its biodiversity.
