Answer a)
The students should only have changed one variable to test for germination of seeds. They should have just changed the seed types and rest all factors like temp, pH should be kept constant for all of them.
Answer b)
The procedure could be changed as follows. The students should place three of each types of seeds in the petri dish. They should keep all the conditions like nutrients, temperature, pH constant for all the three dishes. After this observations should be made to check which seed germinates faster.
Disrupts the nitrogen cycle by contaminating the groundwater and making it more difficult for the plants to absorb the nitrogen and causes the phosphorus cycle to accelerate, resulting in an excess of phosphorus in water and soil.
Sedimentary rocks<span> can be categorized into three groups based on sediment type. Most sedimentary rocks are formed by the </span>lithification<span> of </span>weathered<span> rock debris that has been physically transported and deposited. During the transport process, the particles that make up these rocks often become rounded due to abrasion or can become highly sorted. Examples of this type of sedimentary rock include </span>conglomerate<span> and </span>sandstone<span>. Scientists sometimes call this general group of sedimentary rocks </span>clastic<span>. The remaining types of sedimentary rocks are created either from chemical precipitation and crystallization, or by the lithification of once living </span>organic matter<span>. We identify these sedimentary rocks as being </span><span>non-clastic
So the Answer Would Be C</span>
Put half of the beans in half of the pots along with compost soil and the other half with non comports. Keep track daily of growth rates.
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