Asteroid impact
Volcanic eruptions
Explanation:
Asteroid impact and volcanic eruptions are two common events that could lead to a mass extinction.
A mass extinction is an abrupt decrease in life on earth due some catastrophic event.
- The collision of a large bolide on the surface of the earth is a catastrophe in itself.
- The collision and its aftermath have destructive consequences on life.
- The force of the collision can reverberate in form of vibration throughout the earth.
- It can cause heating of the earth surface.
- Volcanic eruptions can become global phenomenon that upsets the earth balance.
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Extinction brainly.com/question/10860460
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Answer: Along with substitutions, mutations can also be caused by insertions, deletions, or duplications of DNA sequences. Some mutations are hereditary because they are passed down to an offspring from a parent carrying a mutation through the germ line, meaning through an egg or sperm cell carrying the mutation.
Explanation:
25. D nucleus
27. A Small molecules are obtained from large molecules during digestion
64. D (?)
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Answer and Explanation:
Scanning Objective Lens (4x): it has a low magnifying power. It is used to make scanning scanning analyzes, can be used in conjunction with a 10x ocular lens, expanding its magnification to 40x
Low Power Objective (10x): It is efficient for analysis on glass slides and is one of the most used lenses due to its high adaptability. Provides a very close view of the user.
High Power Objective Lens (40x): It allows a much closer view because it has high power. It allows the visualization of fine and delicate details.
Oil Immersion Objective Lens (100x): provides powerful magnification, allowing many details to be observed. It can be combined with an eyepiece lens, expanding its magnifying capacity. It needs to be dipped in oil to work properly.
