Answer:
rarefaction
Explanation:
along the same direction the wave travels
by the contamination of drinking water with sewage when tje pipes for the transportation of drinking water and disposal of sewage are drawn together in cities
Explanation:
multicellular organisms thus have the competitive advantages of an increase in size without it's limitations
Organic matter is added to basic soil to neutralize its base which improves its quality.
<h3>What is an organic matter for soil? </h3>
Manures are organic matter. These are the waste products of plants and animals that are used as sources of plant nutrients. After their decomposition, they release nutrients.
The practice of collecting and using wastes from animal, human and vegetable sources for the improvement of productivity of crops is as old as the practice of agriculture.
Plant nutrients in complex organic forms are present in the manure which is the organic matter in the plant and animal wastes. The synthetic chemicals that contain plant nutrients are called fertilizers.
Manures have low nutrient content per unit quantity and have a longer residual effects. They can work by improving soil's physical properties compared to fertilizer with high nutrient content.
Therefore, organic matter is added to basic soil to neutralize its base which improves its quality.
Read more about manure, here
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Answer:
The genotype of the original parents is pp PP
Explanation:
Let “P” represents the purple color allele of the flower of pea plant
and “p” represents the white color allele of the flower of pea plant
Genotype of homozygous purple flowered pea plant is represented by "PP"
Genotype of homozygous white flowered pea plant is represented by "pp"
a) First generation cross between a homozygous purple flowered pea plant and a homozygous white flowered pea plant
P P
p Pp Pp
p Pp Pp
All the offspring are heterozygous purple flowered pea plants
b) In second generation cross is taking place between two heterozygous purple flowered pea plants with genotype "Pp"
P p
P PP Pp
p Pp pp
Out of four offspring , one is white while rest three are purple flowered pea plant.
Hence, the genotype of the original parents is pp PP
