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egoroff_w [7]
2 years ago
8

While cleaning out the garage, Duane found his old bicycle. Some of the paint had worn off, exposing the iron frame inside. Duan

e noticed that parts of the iron frame had become reddish-brown and rough and that parts were flaking off. What happened to Duane's old bicycle? A Oxygen from the humid air chemically reacted with the iron in the frame, creating rust, a new substance with different properties. B Oxygen from the humid air physically reacted with the top layer of iron, wearing it away to expose the natural rust underneath. C The circulating air in the garage deposited a layer of rust on the iron frame. D The iron in the frame naturally decomposed into rust without any reaction.
Biology
2 answers:
Ivan2 years ago
7 0

Answer:Duane is dumb

Explanation:cause I am smart

I am Lyosha [343]2 years ago
5 0

Answer: option A - Oxygen from the humid air chemically reacted with the iron in the frame, creating rust, a new substance with different properties.

Explanation:

Rusting refers to the deteriorated state of IRON as a result of moisture (water molecules) and oxidation (addition of oxygen)

For example: The rust on a bicycle chain can make cycling to work very difficult.

Also, note that RUST has a reddish-brown color. So, RUSTING has affected Diane's bicycle

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Some students were studying antibodies in the body. In determining their composition, they were told they are polypeptides forme
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They concluded that these antibodies were a) Globular proteins

Explanation:

Globular proteins are known to be water-soluble, spherical in shape and to be polypeptides as well. Compared to the other options provided, the selected one is the most correct.

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2 years ago
What can you infer about a species that has a random pattern of distribution over space? A uniform pattern?
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The individual organisms that frame a population are additional or less equally spaced, spread every which way with no predictable pattern, or clustered in teams. These are called the uniform, random, and clumped dispersion patterns.   Uniform refers to the evenly distributed population, random means random spacing and clumped shows the distribution in clusters.

Food supply and resources are directly proportional to a particular distribution pattern. Random distribution occurs when several pollen grains of some flowers were carried by wind or bees. These flowers will then bloom where they were scattered.

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2 years ago
A population of rabbits lives in a forest. The habitat features many small spaces for hiding. Over many generations, the average
Elina [12.6K]
Selective selection,since being smaller is an advantage the rabbits got smaller similar to evolution
8 0
2 years ago
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In mammoths, assume that spotted skin (S) is dominant over non-spotted skin (s) and that wooly hair (W) is dominant over non-woo
lisabon 2012 [21]

Answer:

Genotypic and Phenotypic ratios → 1:1:1:1

  • 25% of the progeny is expected to be SsWw, exhibiting spotted skin and wooly hair, SsWw
  • 25% of the progeny is expected to be Ssww, exhibiting spotted skin and non-wooly hair, Ssww
  • 25% of the progeny is expected to be ssWw, exhibiting non- spotted skin and wooly hair, ssWw
  • 25% of the progeny is expected to be ssww, exhibiting non-spotted skin and non-wooly hair, ssww

Explanation:

<u>Available data</u>:

  • spotted skin (S) is dominant over non-spotted skin (s)
  • wooly hair (W) is dominant over non-wooly hair (w)
  • Cross: heterozygous spotted, non-wooly mammoth with a heterozygous wooly-haired, non-spotted mammoth.

Parentals) Ssww   x   ssWw

Gametes) Sw, Sw, sw, sw

                 sW, sW, sw, sw

Punnett square)     Sw            Sw           sw           sw

                  sW      SsWw      SsWw      ssWw     ssWw

                  sW      SsWw      SsWw      ssWw     ssWw

                  sw      Ssww       Ssww       ssww      ssww

                  sw      Ssww       Ssww       ssww      ssww

F1) 4/16 = 1/4 = 25% of the progeny is expected to be SsWw, exhibiting spotted skin and wooly hair

    4/16 = 1/4 = 25% of the progeny is expected to be Ssww, exhibiting spotted skin and non-wooly hair

    4/16 = 1/4 = 25% of the progeny is expected to be ssWw, exhibiting non- spotted skin and wooly hair

    4/16 = 1/4 = 25% of the progeny is expected to be ssww, exhibiting non-spotted skin and non-wooly hair.

Genotypic and Phenotypic ratios → 1:1:1:1

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Elena-2011 [213]
1 Cardiac muscle cells
2 Smooth muscle cells
3 skeletal muscle cells
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2 years ago
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