10
Explanation:
The Ritcher scale is a logarithmic scale and it suggests that the number increases by a factor of 10.
One point on the scale differs from another by an order of 10.
- The Ritcher scale is used to measure the magnitude of earthquakes in a particular area.
- It is graduated form 1 to 10
- The magnitude of the quake increases as one moves from 1 through 10.
- This is because the magnitude of the quake actually increases by an order of 10.
Learn more:
Earthquake brainly.com/question/6520403
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C) Occurs in areas without soil.
Primary succession occurs in lifeless areas in which <span>soil that is incapable of sustaining life is formed due to lava, sand dunes, and </span><span>rocks left from a retreating glacier.</span>
Answer:
1) pollen grain (A), stigma (B), pollen tube (C), Ovary (D)
The pollen grain is a male reproductive part while ovary is the female reproductive part.
2) When a pollen grain lands on the stigma of a flower, a pollen tube begins to grow. It grows through the style until it reaches an ovule inside the ovary.
3) The pollen tube is a tube that transports the male gamete cells from the pollen grains to the ovule (female gamete) inside the ovary.
The nucleus of the pollen passes along the pollen tube and fuses with the nucleus of the ovule. This process is called fertilisation.
4) After the fertilisation, female parts of the flower develop into fruit and ovules become seeds.
