Answer:
b. 15% nitrogen, 30% phosphorus, 10% potash (potassium)
Explanation:
The marks on the packages of the fertilizers are telling us what is their content. The system used id the N-P-K ratio. The N-P-K ratio is giving us information about the chemicals from which the fertilizer is made, and the percentage of each of them. N stands for nitrogen, P stands for phosphorus, and K stands for potash (potassium). In this case we have 15-30-10. This will mean that the percentage of nitrogen is 15%, the percentage of phosphorus is 30%, and the percentage of potash (potassium) is 10%, meaning that we have a fertilizer that is high on phosphorus content.
The fertilizer grade 15-30-10 corresponds to 15% nitrogen, 30% phosphorous, and 10% potash (potassium), respectively. These nutrients play crucial roles in plant health, growth, energy storage and transfer, along with various cellular functions. The fertilizer type should be chosen based on the plant's specific needs and the existing nutrients in the soil.
The numbers on a bag of fertilizer, or the fertilizer grade, represent the percentages of Nitrogen (N), Phosphorous (P), and Potassium (K), respectively. So, in the case of a 15-30-10 fertilizer, the correct combination would be b. 15% nitrogen, 30% phosphorous, 10% potash (potassium).
Nitrogen is crucial in many of a plant’s biological processes and is a major component of proteins, nucleic acids, chlorophyll, and other cell components. Phosphorus helps plants store and transfer energy. Potassium, also known as potash, is important for overall plant health due to its role in the functioning of cell membranes and its involvement in photosynthesis as well as other cellular processes.
Thus, the composition of a fertilizer should be tailored to the nutritional needs of the specific plant and the nutrient content of the soil in which it is being grown.
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Answer: The main driving force of plate tectonics is gravity. If a plate with oceanic lithosphere meets another plate, the dense oceanic lithosphere dives beneath the other plate and sinks into the mantle. This process is called subduction.
Explanation:
The process of rock and soil being carried away by natural forces is called
A weathering
erosion
chemical breakdown
D. physical weathering
Please select the best answer from the choices provided
The process of rock and soil being carried away by natural forces is called erosion. The correct option is B.
Most often, soil erosion happens when topsoil is exposed to strong winds, heavy rains, and moving water. In some circumstances, human activities—particularly farming and clearing land—leave soil susceptible to erosion.
Erosion is the process by which rock, soil, and other materials are moved from one location to another by natural forces such as water, wind, ice, and gravity. The erosion process begins with the breaking down of rock and soil through weathering, which can occur through physical, chemical, or biological means.
Gravity is also an important force in erosion. Gravity causes rock and soil to move downhill, and over time, this movement can create large-scale erosion features like canyons and gorges.
Thus, the ideal selection is option B.
Learn more about Erosion here:
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Answer:
B. erosion
Explanation:
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