Plants that get nutrients from rocks will can cause chemical weathering. Generally there are two types of weathering processes: physical and chemical weathering and they result in the breakdown of rocks, minerals, etc. Plants contribute to both physical and chemical weathering. Plants that grow in fissures and cracks in the rocks, as they grow their roots extend. Over time, the rocks will be broken into smaller fragments. Many such plants also give off chemicals, most commonly humic acid. These acids help in the breakdown of iron and aluminum compounds in the subsurface. Plants also support microbial life forms that help in weathering of soil and minerals. All these process contribute to the weathering of rocks and minerals.
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Answer: It allowed him to navigate the seas using the sun and stars.
Explanation: The astrolabe enables astronomers and sailors to calculate the position of the Sun and stars with respect to the horizon and the meridian. The astrolabe can calculate the altitude and predict the position of celestial objects in time. An astrolabe is a device that uses astral bodies like the sun and stars to either tell your position in latitude or tell the local time. It can also be used to measure celestial events like the wobble of the Earth's axis. An astrolabe can tell your position in latitude or tell the local time.
The tractor should be selected based on the following factors :
- Land holding: Under a single cropping pattern, it is normally recommended to consider 1 hp for every 2 hectares of land
- Cropping pattern
- Soil conditions
- Climatic conditions
- Repairing facilities
- Running cost
- Initial cost and resale value
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Answer:
This lack of emotional expression is a symptom of schizophrenia called flat affect.
Explanation:
Flat affect, also known as blunted affect, implicates an extreme decrease in the expression of emotions. This phenomenon is commonly seen in people with depression and schizophrenia. A person with schizophrenia can show abnormal signs of emotion, speak in a toneless voice, lack significant facial expressions, and seem to show severe apathy.
I think the boy should be 9 years old because he know about the surface area and height
