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Refer to the information below to answer the following questions. Researchers decided to test the hypothesis that if the 2-m tall Polytrichum gametophyte-sporophyte plants had acted as a physical buffer, then they would have reduced water's ability to erode the soil, and carry away its nitrogen. They began with four equal-sized areas where Polytrichum mosses grew to a height of 2 m above the soil surface. One of the four areas was not modified. In the second area, the mosses were trimmed to a height of 1 m above the soil surface. In the third area, the mosses were trimmed to a height of 0.5 m above the soil surface. In the fourth area, the mosses were trimmed all the way to the ground, leaving only the rhizoids. Water, simulating rainfall, was then added in a controlled fashion to all plots over the course of one year. Figure 29.2 below presents four graphs, which depict potential results of this experiment.
(A)
Refer to the information below to answer the following questions. Researchers decided to test the hypothesis that if the 2-m tall Polytrichum gametophyte-sporophyte plants had acted as a physical buffer, then they would have reduced water's ability to erode the soil, and carry away its nitrogen. They began with four equal-sized areas where Polytrichum mosses grew to a height of 2 m above the soil surface. One of the four areas was not modified. In the second area, the mosses were trimmed to a height of 1 m above the soil surface. In the third area, the mosses were trimmed to a height of 0.5 m above the soil surface. In the fourth area, the mosses were trimmed all the way to the ground, leaving only the rhizoids. Water, simulating rainfall, was then added in a controlled fashion to all plots over the course of one year. Figure 29.2 below presents four graphs, which depict potential results of this experiment. (A) (C) (B) (D) Figure 29.2 -Which graph of soil nitrogen loss over time in Figure 29.2 most strongly supports the hypothesis that if rhizoids had helped stabilize the soil, then less erosion and less loss of nitrogen would occur?

(C)
Refer to the information below to answer the following questions. Researchers decided to test the hypothesis that if the 2-m tall Polytrichum gametophyte-sporophyte plants had acted as a physical buffer, then they would have reduced water's ability to erode the soil, and carry away its nitrogen. They began with four equal-sized areas where Polytrichum mosses grew to a height of 2 m above the soil surface. One of the four areas was not modified. In the second area, the mosses were trimmed to a height of 1 m above the soil surface. In the third area, the mosses were trimmed to a height of 0.5 m above the soil surface. In the fourth area, the mosses were trimmed all the way to the ground, leaving only the rhizoids. Water, simulating rainfall, was then added in a controlled fashion to all plots over the course of one year. Figure 29.2 below presents four graphs, which depict potential results of this experiment. (A) (C) (B) (D) Figure 29.2 -Which graph of soil nitrogen loss over time in Figure 29.2 most strongly supports the hypothesis that if rhizoids had helped stabilize the soil, then less erosion and less loss of nitrogen would occur?

(B)
Refer to the information below to answer the following questions. Researchers decided to test the hypothesis that if the 2-m tall Polytrichum gametophyte-sporophyte plants had acted as a physical buffer, then they would have reduced water's ability to erode the soil, and carry away its nitrogen. They began with four equal-sized areas where Polytrichum mosses grew to a height of 2 m above the soil surface. One of the four areas was not modified. In the second area, the mosses were trimmed to a height of 1 m above the soil surface. In the third area, the mosses were trimmed to a height of 0.5 m above the soil surface. In the fourth area, the mosses were trimmed all the way to the ground, leaving only the rhizoids. Water, simulating rainfall, was then added in a controlled fashion to all plots over the course of one year. Figure 29.2 below presents four graphs, which depict potential results of this experiment. (A) (C) (B) (D) Figure 29.2 -Which graph of soil nitrogen loss over time in Figure 29.2 most strongly supports the hypothesis that if rhizoids had helped stabilize the soil, then less erosion and less loss of nitrogen would occur?

(D)
Refer to the information below to answer the following questions. Researchers decided to test the hypothesis that if the 2-m tall Polytrichum gametophyte-sporophyte plants had acted as a physical buffer, then they would have reduced water's ability to erode the soil, and carry away its nitrogen. They began with four equal-sized areas where Polytrichum mosses grew to a height of 2 m above the soil surface. One of the four areas was not modified. In the second area, the mosses were trimmed to a height of 1 m above the soil surface. In the third area, the mosses were trimmed to a height of 0.5 m above the soil surface. In the fourth area, the mosses were trimmed all the way to the ground, leaving only the rhizoids. Water, simulating rainfall, was then added in a controlled fashion to all plots over the course of one year. Figure 29.2 below presents four graphs, which depict potential results of this experiment. (A) (C) (B) (D) Figure 29.2 -Which graph of soil nitrogen loss over time in Figure 29.2 most strongly supports the hypothesis that if rhizoids had helped stabilize the soil, then less erosion and less loss of nitrogen would occur?

Figure 29.2
-Which graph of soil nitrogen loss over time in Figure 29.2 most strongly supports the hypothesis that if rhizoids had helped stabilize the soil, then less erosion and less loss of nitrogen would occur?

Definitions:

Moving Assembly Line

An innovation in manufacturing where products move from workstation to workstation where different tasks are performed until the product is completed.

Start-Up Manufacturers

Start-Up Manufacturers are new companies focused on the creation and production of goods, often characterized by innovative approaches and the overcoming of initial financial and market challenges.

National Railroad

A National Railroad refers to a railway system that is owned or operated by a nation-state, often serving as a major component of the country's transportation infrastructure.

Social Security Act

A law enacted in 1935 to create a system of transfer payments in which younger, working populations support older, retired populations through a tax-funded social insurance program.

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