Which statement best describes an example of selective breeding?
5
A. People control how plants or animals reproduce to get desired
traits.
OB. People use enzymes to cut DNA, copy it, and paste pieces of it
back together.
O. Viruses deliver new genes to a person's cells to treat a genetic
condition.
OD. Living things that do well in an environment pass on their genes to
offspring.

His distance and displacement are the same, which was 400 m

Given

Distance = 400 m

time = 2 min

Required

Distance and displacement

Solution

Distance is a scalar quantity that indicates the length of the trajectory that is traveled by an object within a certain interval. Distance has no direction, only has magnitude  

Can be simplified distance = totals traveled  

Displacement is a vector quantity that shows changes in the position of objects in a certain interval of time. Displacement has magnitude and direction  

Can be simplified displacement = distanced traveled from starting point to ending point  

From the definition above shows that the displacement and the distance that he traveled have the same value (magnitude), which is equal to 400 m

The value of the two will be different if he starts and finishes at the same point, then the displacement value is zero while the distance he has traveled is still 0

Answer is:

either A, or D

Explanation:

Answer:

B on edge

Explanation:

Curies discovered two new radioactive elements radium and polonium.

They first determined polonium, named for Marie's place of origin Poland, in July 1898. whilst Marie Curie become joined via her physicist husband Pierre Curie to have a look at uraninite, then known as pitchblende, a uranium-rich mineral, and ore.

Indefatigable notwithstanding a profession of bodily demanding and in the end fatal work, she located polonium and radium, championed the use of radiation in medication, and basically changed our information about radioactivity. Curie changed into born Marya Skłodowska in 1867 in Warsaw.

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Answer:

...............

Explanation:

Percentage composition of oxygen = (80/134) * 100% = 59.7%.

Answer:

The central value of the sets of observation can be mean, median or mode depending upon the kind of data provided as all are measure of central tendency.

Explanation:

Answer:

Shell number

Explanation:

Answer:

A. They include both oxidation and reduction reactions AND B. Electrons are transferred.

Explanation:

a p e x

The statements that are true about redox reaction are:

A. They include both oxidation and reduction reactions,

B. Electrons are transferred.

The Redox reaction is the one in which oxidation and reduction take place simultaneously. In this process transfer of electrons takes place which further leads to oxidation or reduction.

Thus, options A and B are correct.

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Answer:

Ketchup is not a change, it is a sauce.

Explanation:

Answer:

There is no change in the tomatos structure its "state of matter" you could say is changed, but the actual chemical compoud is the same.

Usually electrical conductors have loosely bound electrons. Materials that conduct heat are thermal conductors

Answer:

meter

have a nice holiday

Answer:

The Meter

Explanation:

In the metric system, the meter is the standard measurement of length.

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Answer:

2

Explanation:

The subscript on Ammoniumwhich is (NH4) is 2.

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Explanation:

Uses of hydrogen :

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Answer:

metal

Explanation:

Answer:

Sick Core corona +iep =Qurintine

Answer:

3Fe²⁺ + Cl₂ ⇒ 2Fe³⁺ + 2Cl⁻

Explanation:

manipulate the problem to match charges and have the same amount of reactants and products on both sides.

Answer:

c lined with aluminum foil

Answer:

B

Explanation:

Number of purple flowers

Number of white flowers

1

705

224

2

792

189

3

834

102

4

889

84

5

938

21

6

952

0

Ralph wanted to breed a pea plant that produced only purple flowers. He continued to breed purple-flower producing pea plants together over six generations. The results of Ralph's selective breeding are shown above. What did the selective breeding do to the population of pea plants?

A. increased its genetic diversity

B. decreased its genetic diversity

C. caused a new species of pea plant to form

D. caused a pea plant to exhibit a new characteristic

The correct answer would be that selective breeding decreased the genetic diversity of the population of the pea plants.

The genetic diversity of a population can be viewed as the number of genes in the gene pool of the population.

With each successive generation, more purple-flowered and less white-flowered pea plants were being produced until the 6th generation when only purple-flowered pea plants were produced. The ratio of the purple color gene to that of white color kept increasing until there was no longer a white color gene in the population. Hence, the genetic diversity of the population was decreased by the selective breeding.

The correct option is B

Answer:

The correct answer is option C "They have same general formula"

Explanation:

Hydrocarbons are any of a class of natural substance intensifies made distinctly out of the components carbon (C) and hydrogen (H). The carbon particles consolidate to shape the structure of the compound, and the hydrogen molecules append to them in various arrangements.

Hydrocarbons are the chief constituents of oil and gaseous petrol. They fill in as powers and ointments just as crude materials for the creation of plastics, strands, rubbers, solvents, explosives, and modern chemical substances.

All of the compounds given are alkanes and they have the same general formula which is represented by CnH2n+2, where ‘n’ is the number of carbon atoms.

B. Kids should go to school for 12 years.

Scientific statements are those statements that must be falsifiable which means that able to be proven false while on the other hand, tautology is a statement that is true. The sun revolves around the earth” is an example of scientific statement because this statement can be falsifiable in the light of evidences and researches. Hypothesis is a statement that may be true or false. We can verify it by doing experiments.

So we can conclude that option B is the sentence that represents a scientific statement.

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Answer:

red beryl

Explanation:

Red Beryls = Density range is 2.63g/cm3 to 2.92 g/cm3

Rubies = Density Range is 3.9 g/cm3 to 4.1 g/cm3

Mass of stone = 4.35 g

Volume of solid = change in water level = 1.5 mL = 1 cm3

Relationship between mass, volume and density is given by;

Density = Mass / Volume

Density = 4.35 / 1.5 = 2.9 g/cm3

The density of the stone falls in the red beryls range hence it is a red beryl.

Explanation:

There is more solute than the solvent can hold (C).

Answer:

The required numerical set up is;

RAM = (19.78% * 10) + (80.22% * 11)

Explanation:

The relative atomic mass is the sum of the products of the mass of each isotope and its relative abundance.

Hence the relative atomic mass of Boron is obtained form;

RAM = (19.78% * 10) + (80.22% * 11)

RAM = (1.978) + (8.8242)

RAM =10.8022

Explanation:

it's answer is last

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↓ 500 N  represents the net force as the force is acting in downward direction.

Force is defined as a cause which is capable of changing the motion of an object. It can cause an object which has mass to change it's velocity. It is also simply a push or a pull . It has both magnitude as well as direction.Hence, it is a vector quantity.

It has SI units of Newton and is represented by'F'.Newton's second law states that force which acts on an object is equal to momentum which changes with time. If mass of object is constant, acceleration is directly proportional to net force acting on an object.

The concepts which related to force are thrust and torque .Thrust increases the velocity of an object and torque produces change in rotational speed of an object.

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Answer: It’s called a alpha particle

Explanation:

Answer:

water is a compound and nitrogen is an element

Explanation:

water is a compound and also a molecule because it is a combination of two different element, while nitrogen is an atom or an element

Answer:  Water is a compound and nitrogen is an element.

Explanation:

Water = H20 = 2 Hydrogen atoms and 1 Oxygen atom

Nitrogen (N) element of Group 15 of the periodic table

Explanation:

Moles of Oxygen = 64/16 = 4

Moles of Hydrogen = 8/1 = 8

Hence the empirical formula is H2O.

Answer:

Moles of tin = 0.37 mol

Explanation:

Given data:

Mass of tin oxide = 50 g

Moles of tin = ?

Solution:

Number of moles of SnO:

Number of moles = mass/molar mass

Number of moles = 50 g/ 134.71 g/mol

Number of moles = 0.37 mol

We can see there is only one mole of Sn is present in one mole of tin oxide.

Thus in 0.37 mol  of tin oxide,

0.37 mol × 1 = 0.37 mol of tin

Answer:

Lithium

Explanation:

Although sodium may seem like a viable answer because it has more protons (and thus a greater attractive force) in its nucleus, we need to take into account what "valence electrons" means. Valence electrons are, simply, electrons that are on the outermost electron shell of an atom. Sodium has an additional shell of electrons compared to lithium that are far away from the nucleus. Thus, lithium, which has valence electrons closer to its nucleus, would have a stronger attraction between its nucleus and its valence electrons.