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ladessa [460]
2 years ago
14

Explain in steps how overfishing of species like tuna, cod, and sardines can affect the kelp population of the bay ecosystem.

Biology
1 answer:
Zina [86]2 years ago
3 0
Those fish species are removed/ weakened so the organisms that the fish eat have less natural predators and increase in population. They need to eat more kelp in order to sustain their population, resulting in a loss of kelp as there is suddenly more of a demand for it then the kelp can grow. All because the predators were removed from the food chain.
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Describe your DNA model. Which part do the straws represent? The pushpins? The paper clips and the black dots you made with the
Fynjy0 [20]
<h2>Answer 1 with Explanation</h2>

The DNA model represents the genetic code that defines all the characteristics of a living thing and it is made up molecules called nucleotides. Each nucleotide contains and represents a phosphate group, a nitrogen base, and a sugar group. Two long strands are formed by Nucleotides attached together to create a structure called double helix which looks like a ladder, the sides would be made up of sugar and phosphate molecules while the rungs would be the base. The straws represent the sugar-phosphate backbone which forms the structural framework of nucleic acids. It is composed of alternating sugar and phosphate groups.  

<h2>Answer 2 with Explanation</h2>

The push pins re-presence nitrogen-containing base is an essential molecule with a nitrogen atom having the chemical features of a field. The principal biological purpose of a nitrogenous base is to bond nucleic acids collectively. A pushpin owes its essential characteristics to a solitary couple of electrons of a nitrogen atom. It is assigned as the derivatives pair of parent compounds.

<h2>Answer 3 with Explanation</h2>

The paper clips represent ‘five prime’ and ‘three prime’ which indicate the number of carbons in the DNA’s sugar backbone. These two are the distinctive ends of the nucleic acids. The black dots represent the bonds of sugar and phosphate which make up the nucleotides and show the genetic code. These bonds have strong covalent bonds that keep the bonds attached together firmly.

8 0
2 years ago
A human RBC is approximately 6 µm in diameter. An unknown bacterium measures 1 ocular space using the oil immersion objective co
butalik [34]

Answer:

The following is the formula to determine the size from minor spaces and ocular spaces on the stage micrometer:  

Size = Number of minor spaces * 10 micrometer / Number of ocular spaces

A = Number of minor spaces is 2 and the number of ocular space is 1,

Size = 2 * 10 / 1 = 20 micro micrometer. Thus, the size of a bacterium is 20 micrometers.  

B = Thus, it can be said that the size of the bacterium is almost 4 times bigger in comparison to a human red blood cell, which is 6 micrometers in diameter.  

5 0
2 years ago
Dr. Sheffield is a clinical psychologist who specializes in treating pathological gambling. Pathological gambling is defined as
scoundrel [369]

Answer:

True

Explanation:

In a criterion validity test, the results of the test are correlated with the outcomes in future. In this study, the measures of gambling is used to depict the possible outcomes. If the clients tested on gambling measure score high, then it gives the relation of their gambling frequency in past.  

It is a predictive validity type of criterion validity test in which it is estimated that how likely the test or measure score can depict the future or past behaviour of the client.

Thus it is true

6 0
2 years ago
Magnetic reversals ____.
scZoUnD [109]
Magnetic reversals C. PROVIDE STRONG EVIDENCE FOR SEAFLOOR SPREADING.

Magnetic reversal is evident when the <span>change in the Earth's magnetic </span><span>field results in the magnetic </span><span>north being aligned with the geographic south, and the magnetic </span><span>south being aligned with the geographic north. It is also called geomagnetic reversal</span><span>.</span>

Magnetic reversals can occur in less than 100 years. It led to extinction events during the pre-historic times. Because the magnetic field is rapidly weakening, magnetic reversal may cause biblical floods.

8 0
2 years ago
Read 2 more answers
4. Jimmy likes to work with his friend Joe in 7th grade science class labs. However, he notices that he tends to get lower grade
Bogdan [553]

Answer:

If Jimmy works better with someone other than Joe, then Joe is a part of the problem of Jimmy getting lower grades.

b responding variable

Explanation:

If, then statements are used for scientific hypothesis's.

3 0
2 years ago
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