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deff fn [24]
2 years ago
7

In cod fishing, older and larger fish are more likely to be retained in nets than younger and smaller fish. Despite the removal

of these large breeders, the population is still reproducing. How do you think cod characteristics have changed due to the selection pressure from over-fishing?
A. Selection has led to increased growth rates.B. Selection has led to decreased growth rates.C. Selection has led to increases in the age of fish at the age of reproductive maturity.D. Selection has led to decreases in the size of fish at the age of reproductive maturity.
Biology
2 answers:
navik [9.2K]2 years ago
5 0

Answer:

The correct answer is - option d.

Explanation:

Selective pressure is the process or phenomenon that leads to the change or alteration in the behavior in a specific environment. It is the basis of the natural selection based on genetic variation.

In selection pressure population will decrease and adapt the size of the fish at the age of reproductive maturity, However the offspring in such condition would be less.

Thus, the correct answer is - option D.

AlexFokin [52]2 years ago
4 0

Answer:

D. Selection has led to decreases in the size of fish at the age of reproductive maturity.

Explanation:

The larger body size of the fishes is not an adaptive trait as it reduces the survival chances of these fishes. The process of natural selection tends to increase the frequency of the traits that increase the survival fitness of the organisms. Here, the fishes with smaller body size at the reproductive age have greater chances of survival and would reproduce more to leave more progeny. Over the generations, the selection pressure would increase the proportion of fishes that are smaller during reproductive age.

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levacccp [35]

Answer:

1) B

2) A

3) C

4) C

5) A

6) D

7) A

8) B

9) B

10) A

11) B

12) C

Explanation:

1) This shows that the rock occupies space as what we are looking at here is volume. (The displacement of water) Let's look at each of the options. It doesn't show that matter has mass because there is no mass balance or any equipment to show the heaviness of the rock. The state of matter (options C and D) is not shown here as any matter, which occupies space, when poured or added to an already filled glass will cause the water to spill. Option C says that matter is a solid, which is false as there are many different states of matter, such as solid, liquid and gaseous state. While a rock is a solid, the statement that matters are solid is false.

3) The term space is not commonly used in the study of science, we usually call it volume. This is because 'space' is quite a vague word as it could mean atmospheric space. More precisely, volume is the amount (or measure) of space a matter occupies.

4) Weighing scale measures the amount of mass (or weight) in a body. Options A and D are units of measurement for length while B is used for volume. Recap: volume is the amount of space an object occupies

5) Here, we are differentiating matter from non -matter

Properties that differentiate a matter from a non- matter are mass and volume. Matters have mass and occupies space (have volume).

6) I. Light is not a matter

II. All matter

III. Heat is not a matter. It is the measure of coldness or hotness in a body.

IV. All matter

9) Option C talks about diffusion.

10) An ion is a charged particle. For example, if an atom gains or loses an electron, it becomes negatively or positively charged and is now known as an ion.

A molecule is a group of atoms bonded together.

12) Atoms are very tiny so centimeters and millimeters would be too big of a unit for measuring them. Gram is a unit of measurement of mass.

<u>☆ Extra:</u>

Mass is the amount of substance in a body while weight is the amount of gravitational force acting on a body.

6 0
2 years ago
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Bad White [126]

Answer:

<em><u>Individual organisms live together in an ecosystem and depend on one another. ... One category of interactions describes the different ways organisms obtain their food and energy. Some organisms can make their own food, and other organisms have to get their food by eating other organisms</u></em>

8 0
2 years ago
each upward movement of the basilar membrane causes the stereocilia of the inner hair cells to bend, opening __________ gates.
Bingel [31]
Each upward movement of the basilar membrane causes the stereocilia of the inner hair cells to bend, opening K+ gates.
5 0
2 years ago
How does respiration and circulatory work together to provide your cells with the reactants they need for cellular respiration?
Assoli18 [71]

The respiratory system works with the digestive and circulatory systems to make cellular respiration possible. During cellular respiration, your cells use oxygen and glucose to release energy. Carbon dioxide is a waste product of the process. Carbon dioxide must be removed from cells.

Info from: Google lolz.

3 0
2 years ago
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ArbitrLikvidat [17]

Answer:

Scientist count the world humans population with an organization called The United Nations Population Division (UNPD),

Explanation:

Which keeps track of the world population, projects that the world's human population will hit 7 billion on Halloween Day 2011. Admittedly, that is just an estimate: There's no way to know exactly how many people are alive at any given moment, and the true date that humanity's ranks will surpass 7 billion could come in the weeks or months before or after Oct. 31. Nonetheless, the UN's guess is the best there is.

4 0
3 years ago
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