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navik [9.2K]
2 years ago
11

Unionid mussels are native to the Hudson River in New York State. In the early 1990s, zebra mussels were introduced into the Hud

son River. The table shows the number of unionid mussels and zebra mussels over the course of six years.
How did the population of unionid mussels change after zebra mussels were introduced? Why did this change occur?
Biology
2 answers:
tekilochka [14]2 years ago
8 0
They decrease because the zebra mussel were taking their resources. Leaving them nothing to eat.
nika2105 [10]2 years ago
8 0

Answer:

sample:

Explanation:

The population of unionid mussels in the Hudson River decreased after zebra mussels were introduced. Zebra mussels, a nonnative species, competed with the unionid mussels for food. The zebra mussels were able to outcompete the unionid mussels, allowing the zebra mussel population to increase dramatically over six years. The unionid mussel population decreased due to a lack of food.

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Which of the following is the correct sequence, going from simplest to most complex, in the levels of structural organization of
Bas_tet [7]

Answer:

The correct answer is option A.

Explanation:

Cellular organization is one of the characteristics of life that states that each living organism is made up cell or more than one cell, that is made up by organization of various components such as chemicals like micro molecule that form the macro molecule and these chemical level structural organization is formed together to make cells and this level of organization makes the tissue which is complex to cell but simpler to organ that is makeup of various together.

The makeup of organs is necessary as organs are the structural level that individuals facilitate the function and make up the organ system that is a complex system made up of organs that are similar in their function. The organism is the most complex of all levels.

Thus, the correct answer is option A.

7 0
2 years ago
In your own words, explain why a virus such as the rhinovirus, which relies on close contact to spread, might evolve to favor le
Zielflug [23.3K]

Rhinoviruses are transmitted through the air or via contact. We might expect this sort of transmission to require a fairly healthy host (one who gets out and comes into contact with others) and, hence, to select against virulent strains. If we take precautions and try to stay away from people or avoid any contact with people, more hand-washing stations, increased attention to sanitization, and isolation of patients will help to reduce the transmission of the disease and, in the process, may favor the evolution of less virulent strains of the virus.

7 0
2 years ago
Read 2 more answers
If a diploid sperm fertilized a diploid egg what would the result be
garik1379 [7]

Answer:

Triploid egg

Explanation:

Triploid, with three copies of each chromosome. When a diploid sperm fertilizes a haploid egg cell it causes a triploid zygote, which leads to the chromosomalabnormalities in the zygote.

5 0
2 years ago
A geologist is studying an ancient stack of rock layers. Most of the layers contain fossils of shallow marine creatures (clams,
Paul [167]

Answer: C. The environment changed suddenly from a shallow ocean setting to a river system.

Explanation:

The presence of the fossils of shallow oceanic creatures like corals points to the fact that the environment was a shallow ocean at some point. There is also a presence of a layer on top of that which points to a river system.

The fact that the oceanic fossils are beneath the river system layer means that the ocean came first and the river system layer came second. The environment must therefore have been a shallow ocean setting that changed into a river system.

5 0
1 year ago
Read 2 more answers
Your teacher gives you this model of transcription. Choose the statement that best describes the role of DNA in transcription.
Sergeu [11.5K]

Answer:

C

Explanation:

A)

DNA directs the synthesis of RNA.

B)

DNA splits into two strands of RNA.

C)

A strand of DNA is used as a template for the formation of RNA.

D)

Two strands of RNA are formed by copying each of the strands of DNA.

The correct answer would be that <u>a strand of DNA is used as a template for the formation of RNA.</u>

<em>Transcription is a process during which RNA is synthesized using DNA as a template. The coding strand of the DNA is utilized as a template for the formation of messenger RNA. During this process, the double helix structure of the DNA is unwound by an enzyme and the coding strand is bound by a short DNA strand at the beginning of a gene while another enzyme adds RNA nucleotide bases to elongate the short strand.</em>

The correct option is C.

3 0
1 year ago
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