Answer:
Polluted agricultural runoff is a major source of water pollution globally. Agricultural runoff is primarily caused by melted snow or rainfall. It is, in essence, water that does not stay in the soil but instead flows on the surface and carries a variety of polluting elements.
Explanation:
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A D=0.20; d = 0.80
Explanation:
p² + 2pq + q² = 1
We find genetic frequency of the recessive gene then allelic frequency for the recessive alele;
q² = 32/50
q² = 0.64
q = 0.8
Allele frequencies of a gene add up to 1;
P + q = 1
p + 0.8 = 1
p = 1 – 0.8
p = 0.2
Answer:
Crop rotation and cover crops are important so that the soil stays very nutritious and healthy. With crop rotation, different plants are planted each year, thus giving each planting nutrients.
Explanation:
Answer:The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere . The layer below the rigid lithosphere is a zone of asphalt-like consistancy called the Asthenosphere . The asthenosphere is the part of the mantle that flows and moves the plates of the Earth.
Explanation: