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atroni [7]
3 years ago
14

Compare the benefits of natural change to ecosystems to the disadvantages.

Biology
1 answer:
Dominik [7]3 years ago
5 0
Natural changed to the ecosystem relate to environmental shock that occur naturally. Natural changes include floods, volcanic activity, hurricanes, etc. They can be destructive, but they also have advantages. Floods have the contribution of nutrients to the soil which was lacking. It can also relocate fishes and organisms living in bodies of water which improves the ecosystem.
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Which phylum of algae stores food in the form of floridean starch?
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<span>Rhodophytes or Red Algae is the phylum of algae that stores food in the form of floridean starch. It is one of the most established gatherings of eukaryotic green growth. The Rhodophyta likewise includes one of the biggest phyla of green growth, containing more than 7,000 as of now perceived species with ordered corrections continuous.</span>
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3 years ago
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2. A male rabbit with the genotype GGbb is crossed with a female rabbit with the genotype ggBb
bekas [8.4K]

Answer:

- Half (8/16) of the offspring will have gray fur and black eyes.

- Half (8/16) of the offspring will have gray fur and red eyes.

- None (0/16) of the offspring will have white fur.

Explanation:

For the purposes of this question, we will assume the following notation for the involved alleles:

G: gray fur (dominant), g: white fur (recessive).

B: black eyes (dominant), b: red eyes (recessive).

A GGbb rabbit may only produce one type of gametes, namely Gb.

A ggBb rabbit may produce either gB or gb gametes.

Since not all theoretical combinations are present, the resulting Punnett square may be simplified as follows:

       |     Gb

——-+-————

gB   |   GgBb

——-+-————

gb   |   Ggbb

As seen above, 100% of the offspring will have a Gg genotype (resulting in gray fur). As for eye color, half of them will have a Bb genotype (resulting in black eyes) whereas the other half will have a bb genotype (red eyes).

6 0
3 years ago
Many soil-dwelling bacteria produce molecules that can be naturally synthesized and kill other species of bacteria. What are the
Masteriza [31]

Many soil-dwelling bacteria produce molecules that can be naturally synthesized and kill other species of bacteria. What are these bacteria-killing molecules called antibiotics

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Antibiotics can also interfere with other medications you may be taking. Antibiotic side effects account for nearly one-fifth of  emergency room visits. These conditions are the most common reasons for emergency room visits for children under the age of 18. Taking antibiotics you don't need unnecessarily exposes you  to the drug's side effects and denies you the benefits.

Learn more about antibiotic here:

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5 0
2 years ago
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In a certain species of plant, the allele to produce green melons (G) is dominant over the allele to produce yellow melons (g).
marishachu [46]

Answer:

4.26

Explanation:

Let the green-melon parents be Gg, then we expect the cross with the yellow-melon plant gg so as to produce 50% Gg and other 50% of gg offspring. What we observed was that 53 green and a 41 yellow. Based on the total number of 94 offspring , we expected half and a half ratios to be 47 of each color.

                                Observed(o)   Expected(e)   (o-e)    $(o-e)^2$      $(o-e)^2/e$

Green-melon plant        53                    47               6          36             0.766

Yellow-melon plant        41                    47              -6          36             0.766

Therefore the chi-square value is 1.53 which is less than the critical value of 3.84. Therefore, the null hypothesis is accepted.

4 0
3 years ago
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