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faltersainse [42]
3 years ago
13

In the 1800s, how did Darwin explain the origin of species?

Biology
2 answers:
katen-ka-za [31]3 years ago
6 0

He presents a significant amount of evidence that evolution occurs. He also explains the distribution and variety of organisms on earth regarding natural processes which are observable every day.

satela [25.4K]3 years ago
4 0

It's through Natural Selection

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Classify each cell as haploid or diploid. 1. microspore:
Alex17521 [72]

Answer:

microspore: haploid

2. first polar body: haploid

3. spermatid: haploid

4. ovum: haploid

5. secondary oocyte: haploid

6. primary spermatocyte: diploid

7. microsporocyte: diploid

8. oogonium: diploid

9. megaspore: haploid

10. spermatogonium: diploid

Your answer

Explanation:

1. Microspore is a haploid spore produced by mostly ferns. They give rise to male gametophytes, which in turn produces sperm cell.

2. Polar body is one of the haploid cells that forms during the process of oogenesis (gametogenesis), specifically when the primary oocyte undergoes an unequal division.

3. A spermatid is an haploid cell that arises from the second meiotic division of the spermatogonia.

4. The ovum is the female gamete of most sexual reproducing organisms. It is also called the EGG CELL. It is haploid.

5. Secondary oocyte are haploid cells that results from the meiotic division of the primary oocyte.

6. Primary oocyte is the diploid cell that starts the meiotic division during oogenesis. It arises from the mitotic division of the oogonium.

7. The microsporocyte is the diploid cell that undergoes meiotic division to produce microspores in ferns and other land plants.

8. Oogonium are the diploid stem cells that initially starts the oogenesis process. It undergoes mitosis to form the primary oocyte, which divides meiotically till the ovum is formed.

9. Megaspore is a haploid spore that gives rise/germinates to the female gametophyte in ferns. The female gametophyte produces the haploid eggs.

10. Spermatogonium are undifferentiated stem cells that produces the sperm cells in males via the process of spermatogenesis. The spermatogonia is diploid in nature

5 0
3 years ago
Which best describes plant classification?
timurjin [86]
Angiosperms are grouped into monocots and dicots
8 0
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What role does the Automated Surface Observing Systems (ASOS) play in weather forecasting?
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The correct answer is that it is the nation's primary weather-observing network.  

The ASOS (Automated Surface Observing System) units are the automated sensor suites, which are created to serve aviation and meteorological requirements. There are presently more than 900 ASOS locations in the United States.  

These systems usually report at hourly intervals, however, it also reports unique observations if weather conditions modify briskly and cross aviation operation thresholds. The ASOS functions as a main climatological observing network in the United States.  


4 0
3 years ago
Read 2 more answers
When was Nigeria amalgamated?​
oksano4ka [1.4K]

Answer:

hope you like it

Explanation:

In 1914, Southern Nigeria was joined with Northern Nigeria Protectorate to form the single colony of Nigeria.

Status: Protectorate of the British Empire

Currency: Pound sterling (1900–13); British W...

Capital: Lagos (administrative centre from 1906)

The modern state originated with British colonialization in the 19th century, taking its present territorial shape with the merging of the Southern Nigeria Protectorate and Northern Nigeria Protectorate in 1914 by Lord Frederick Lugard.

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Don has a family history of high blood pressure. How can Don's family history impact his health?
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That blood pressure can be due to overweightness or stress, so he cold have a lower metabolism or higher chance of getting depression.
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