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igor_vitrenko [27]
3 years ago
9

The following is one of the food chains within the Alaskan coast. The sea otter feeds on the sea urchins and the sea urchins fee

ds on the kelp (sea weed). It has been observed that the population of the sea otter is decreasing while the population of sea urchins is exploding. Consequently, the sea urchins have almost depleted the kelp. Which of the three species can be regarded as a keystone species/predator?
Biology
1 answer:
Gala2k [10]3 years ago
7 0

Answer:

The correct answer is sea otter.

Explanation:

A keystone species is that species that have a major impact on its ecosystem relative to its number. A keystone species stabilize an ecosystem by controlling the population of other species.

For example, sea otter is a keystone species that feeds on sea urchin and control its population. As the sea urchin population is under control seaweed population is also stable because sea urchin feeds on seaweeds.

As the population of sea otter declines the population of sea urchin increases because of having fewer predators and then this overpopulation of urchin depletes all the kelp by feeding on them.  

Therefore the right answer is- sea otter is the keystone species.

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Answer:

CGTCATC

Explanation:

In a DNA double helix, the complementary bases of two strands of DNA are paired by hydrogen bonds. Adenine of one DNA strand is paired with the thymine of the other strand. Similarly, the guanine of one DNA strand is paired with the cytosine of the other DNA strand. If a portion of one of the two strands of a DNA molecule has the sequence GCAGTAG. The sequence of the other strand would be as following:

One DNA strand: GCAGTAG

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<span>According to the nebular theory stars are formed in which sequence: 
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c. Gravitational forces - when clumps have grown into big sizes the gravitational forces that are found within it increases and are converted into kinetic energy of fast-moving particles that continuously bump into each other and create or generate heat. 
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Answer:

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According to Mendel's law of dominance, for a particular trait, an allele is capable of masking the expression of another allele in a gene. The expressed allele is called the DOMINANT allele while the masked allele is called the RECESSIVE allele. Due to this, an organism can express a dominant trait even in a combined or heterozygous state i.e. different alleles.

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