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Fed [463]
3 years ago
11

Define "water pollution".

Biology
2 answers:
Elina [12.6K]3 years ago
8 0

Answer: It is the indiscriminate dumping of nonuseful substances into water bodies

Explanation:

Water pollution occurs when non-useful substances like chemical, industrial, human wastes etc, are dumped into water bodies (oceans, rivers, lakes) as a means of disposing such wastes

For instance: water pollution occurs when unused battery is drop in the lake, sewage is dumped in the river etc

Mama L [17]3 years ago
6 0

Answer:

The introduction of a foreign substance, usually harmful, into a water source

Explanation:

Anything that doesn't naturally belong in the water

Examples: plastics, scrap metal, fertilizers

leaves, sticks, and cadavers are more of a grey area. They are part of nature but if it clogs the water source, drastically changes the ecosystem or are dumped there, then they are considered pollution.

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Everyone in Smurfette’s family has light blue skin, which is the dominant trait for body color in her hometown of Smurf Valley.
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Answer:

All their descendants will be heterozygous for the skin color, Bb, expressing blue skin.

Explanation:

<u>Available data</u>:

  • Smurfette has light blue skin
  • Her family is a "true bred" or "purebred" line.
  • She married a boy who has light yellow skin
  • blue skin is the dominant trait expressed by the B allele
  • yellow skin is a recessive trait, expressed by the b allele

Cross: Smurfette  x  Husband

Parentals)            BB     x     bb

Gametes)          B   B       b     b

Phenotypes) blue skin     yellow skin

Punnett square)

                       B        B

             b      Bb      Bb

             b      Bb      Bb

F1) 100% of the progeny will be heterozygous for the skin color, Bb

     100% of the progeny will be blue-skinned.

Note: Although the progeny is blue-skinned, they are not true-bred anymore.

7 0
2 years ago
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