Answer:
Chemical weathering
Explanation:
Chemical weathering is the process when rain chemicals react with rocks and minerals. In this process, the rocks are weakened. This chemical happening provokes the chemical reaction in the rock or in the mineral.
Chemical weathering is a spontaneous process and it leads to a more stable state for natural materials under a given set of conditions.
Answer:
cell wall, chloroplasts and other specialized plastids, and a large central vacuole
Explanation:
93AU from the surface of the sun, or the third planet out from the surface of the sun.
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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Answer:
d. secondary endosymbiosis.
Explanation:
- When a living cell acquires another organism that eventually becomes a part of this cell, this process is known as primary endosymbiosis.
- When an organism that has already undergone primary endosymbiosis engulfs another eukaryotic organism then this process is known as secondary endosymbiosis.
- Secondary endosymbiosis has been known to occur in plastids because of which they are surrounded by two membranes. This bilayer is present because one of the layers is the original outer membrane of the organism and the other membrane is that of the organism that has been engulfed.