Helppppp I have one hour until it’s due!!!!

Answer:

It helps them to focus

Explanation:

some people focus better when listening to music

Answer:

For some students it can help and for some it cant

Explanation:

Answer:

The correct answer is - option D. 1/2

Explanation:

Extra digits on hands and feet mean an individual has six fingers in each hand and feet, this is known as polydactyly. Polydactyly shows an autosomal dominant type of inheritance pattern.

In this case, the mother is normal so she must be recessive alleles and the first daughter is normal so the father must have a recessive allele which means he is heterozygous.

Cross:

Man = Dd

Woman = dd

Their children :

    D      d

d   Dd    dd  

d  Dd    dd

Probability of polydactyl child = 2/4 or 1/2 or 50%

Answer:

Random mating

Explanation:

Random mating is a type of mating that allows individual to have equal chance of been mated to.

AA genotye is mated with aa from a population and they produce

Four individuals with Aa

AA × aa

!

F1: Aa Aa Aa Aa

This individuals then intermate in the next generation to produce an offspring with three difference genotype AA, Aa, aa in ratio 1:2:1 this is called segregation of genes. This allow to see the variation and hidden features of the individual mated.

Aa × Aa

!

AA Aa Aa aa

F2: 1/4 AA, 1/2 Aa, 1/4 aa

Answer:

b

Explanation:

The correct answer would be 6.4 x [tex]10^6[/tex] cells/ul.

For 1 x 10-6 dilution, the plating factor is [tex]10^6[/tex]. To find the number of bacteria in the original sample, the plating factor is multiplied by the colony count per ul.

Number of viable bacteria = plating factor x colony count/ul

Since 10 ul gives 64 colonies.  1 ul will give:

         64/10 = 6.4 colonies.

Therefore, the viable bacteria in the original sample = 6.4 x [tex]10^6[/tex] cells/ul

The correct option is b.

Answer:

Explanation:

the nucleus , it contain chromatin reticulum which later forms the DNA  

Answer:

natural selection

Explanation:

Answer:

Expired food and drugs; expired food and drinks that has stayed beyond the appropriate time

Impure water; impure water is dirty water that is not fit for the body system

Unripe fruits; fruits that is not yet due for...

Infested food

Poorly cooked food

Cigarette

Explanation:

Answer:

This question is incomplete; the complete part is: what are the independent, dependent, and controlled variables?

Independent variable: ORGANIC AND CHEMICAL FERTILIZERS

Dependent variable: HEIGHT OF PLANT

Controlled variable: Same type of seed, water

Explanation:

Independent variable is the variable that is changed or manipulated by the experimenter. In this question, John wanted to test the effects that organic and chemical fertilizers had on plant growth. Hence, the independent variable is the ORGANIC AND CHEMICAL FERTILIZERS used.

Dependent variable is the variable that responds to changes made to the independent variable. The dependent variable is the variable that is measured in an experiment. In this case, the HEIGHT OF PLANTS MEASURED is the dependent variable.

Controlled variable or Constant is the variable that is kept unchanged throughout the experiment in order not to influence the experimental result or outcome. In this case, the controlled variable is the SAME TYPE OF SEED USED, WATER.

Answer:

Ig b

Explanation:

it usually means it's a bike only lane, but since it's not an option I would go with b

Answer:

b. Driving less

Explanation:

This photo demonstrates driving less as a carbon footprint solution because riding your bicycle not only provides a wonderful cardiovascular workout but also emits less Carbon Dioxide into the air than a car does.

Answer:

Temperature

Explanation:

Raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction. However, extreme high temperatures can cause an enzyme to lose its shape (denature) and stop working. pH: Each enzyme has an optimum pH range. Extreme pH values can cause enzymes to denature.

Answer:

C

Explanation:

The process by which a modified stem or root of a parent plant grows offspring that remain attached is called vegetative reproduction.

Answer:

hope it's help you...............

Answer:

Explanation:

From the given information,

The first process is to determine the initial growth rate by using the formula:

[tex]R_o = \dfrac{In(2)}{t_d}[/tex]

where;

The initial growth rate(constant) = [tex]R_o[/tex] ; &

the doubling time = [tex]t_d[/tex] = 1 year

[tex]R_o = \dfrac{In(2)}{1 \ year}[/tex]

[tex]R_o[/tex] = 0.693 / year

Now, we move up to the net stage to find the growth constant by using the formula:

[tex]r = \dfrac{R_o}{(1 - \dfrac{N_o}{K})}[/tex]

where;

[tex]N_o[/tex] = population of fish in the pond = 100

[tex]R_o[/tex]  = The initial growth rate(constant)  = 0.693 /year

K = carrying capacity = 2000

Then;

[tex]r = \dfrac{0.693 \ /year }{(1 - \dfrac{100}{2000})}[/tex]

[tex]r = \dfrac{0.693 \ /year }{(1 - 0.05)}[/tex]

[tex]r = \dfrac{0.693 \ /year }{(0.95)}[/tex]

r = 0.730 / year

a)

Now, the maximum yield can be evaluated by using the expression:

[tex]= \dfrac{rk}{4}[/tex]

[tex]= \dfrac{0.730 \times 2000}{4}[/tex]

= 365 fish per year

Also, the maximum sustainable yield is said to be half of the carrying capacity suppose that the population growth obeys logistic curve;

i.e.

[tex]N' = \dfrac{1}{2} \times 2000[/tex]

N' = 1000 fish

b)

If the population is maintained at 1500 fish;

The sustainable yield can be calculated by using the formula:

The Sustainable yield = [tex]r\times N (1 - \dfrac{N}{K})[/tex]

The Sustainable yield = [tex](0.730/ year ) (1500) (1 - \dfrac{1500}{2000})[/tex]

The Sustainable yield = 1095 × 0.25

The Sustainable yield = 273.75 fish per year

The Sustainable yield ≅ 274 fish per year

Population size should be maintained to achieve maximum yield and Sustainable yield if population is maintained at 1,500 fish are 364.7 , 273.525 fish per year

Given that;

Stock in start = 100 fish

Double in 1 year

Capacity of pond = 2000 fish

Find:

Population size should be maintained to achieve maximum yield

Sustainable yield if population is maintained at 1,500 fish

Computation:

Growth rate = ln₂ / 1

Growth rate = 0.693 per year

With no growth constraint r = [tex]\frac{0.693}{1-\frac{100}{2000} }[/tex]

With no growth constraint r = 0.7294 per year

A. Population size should be maintained to achieve maximum yield = [tex]\frac{0.7294 \times 2000}{4}[/tex]

Population size should be maintained to achieve maximum yield = 364.7 fish per year

B. Sustainable yield if population is maintained at 1,500 fish = [tex][(0.7294))(1500)][1-\frac{1500}{2000} ][/tex]

Sustainable yield if population is maintained at 1,500 fish = 273.525 fish per year

Find out more information about 'Sustainable yield'

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Answer:

If a DNA strand has the base sequence TTCCGGAA the complementary strand has the sequence AAGGCCTT.

Explanation:

A DNA molecule is constructed from sequences of its four nitrogenous bases: adenine, thymine, guanine and cytosine. Since DNA is made up of two strands, the sequence of nitrogenous bases of one strand is complementary to the other .

The complementarity of the bases is a characteristic of the nitrogenous bases in the nucleic acids to combine with their complementary base, which is the same as saying that purines complement with pyramidines.

In this way, given a sequence on a DNA strand :

    T-T-C-C-G-G-A-A

The complementary strand will have this sequence:

    A-A-G-G-C-C-T-T

Answer:

B

Explanation:

In summer, the temperature of Vermont is lower than that in Florida. When temperature increases, the ability will decrease. So there is more dissolved oxygen in Vermont's lake.

Answer:

B.) The cooler water in a Vermont lake would be able to hold more dissolved oxygen.

Explanation:

Answer:

A

Explanation:

Answer:

C. All living organisms have the same four nitrogenous bases in common with each other.

Explanation:

Because all living organisms have the same 4 nitrogenous bases in common with each other but different sequences.

Answer:

It would be Α. Starfish

Answer:

Monosaccharide.

Explanation:

The major component in the rigid cell walls in plants is cellulose and is a linear polysaccharide polymer with many glucose monosaccharide units. This is the storage form of glucose in animals and humans which is analogous to the starch in plants.

Answer:

It is a polysaccharide

Explanation:

Please mark me as Branliest!!

Answer:

Semen helps in the production of eggs!

answer:

... semen...

explanation:

i'd be embarrassed to explain that bit

Answer:

conduction?

Explanation:

Answer:

anticyclone/2nd one down

The three domains are Archaea, Bacteria, and Eukarya, and the six kingdoms are Archaea, Bacteria, Protista, Fungi, Plantae, and Animalia.

In biological classification, the three domains are the highest level of organization for categorizing living organisms. They represent broad groups based on fundamental differences in cell structure, biochemistry, and evolutionary history.

Archaea: This domain includes prokaryotic microorganisms known as archaea. They are distinct from bacteria and eukaryotes, and often live in extreme environments like hot springs, deep-sea vents, and salt flats. Archaea have unique molecular and genetic features that distinguish them from other organisms.

Bacteria: This domain consists of prokaryotic microorganisms called bacteria. They are found in a wide range of habitats and exhibit diverse metabolic capabilities. Bacteria play important roles in various ecological processes and have both beneficial and harmful impacts on humans.

Eukarya: This domain includes all eukaryotic organisms, which are characterized by having cells with a membrane-bound nucleus and other membrane-bound organelles. Eukarya encompasses a wide variety of organisms, including protists, fungi, plants, and animals.

The six kingdoms further classify organisms within the Eukarya domain:

These domains and kingdoms provide a hierarchical framework for classifying and organizing the incredible diversity of life on Earth based on shared characteristics and evolutionary relationships.

To learn more about kingdoms, here

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Answer:

Gotta picture? That would help... Cause it says there's an illustration or something... But either way I just looked it up and found an illustration and the illustration showed a wormy lookin' thing and that wormy lookin' thing look like a flat worm. So I'ma say A. Flat worm. Tall me if I'm wrong! Thanks!

Answer:

Answer. This illustration shows a kind of animal that is a free-living organism. Phylum ( Platyhelminthes ) term is the common name of this organism. The phylum is either free-living or parasitic

Explanation:

Answer:

B and i think D

Explanation:

Answer:

a

Explanation:

i took the test

Answer:

i think its vapporization

Answer:

evaporation

Explanation:

its the process in which water gets heated up to a point where it turns into steam or vapor

Yes, according to my point of view I strongly believes that solar cells, wind farms, tidal power, hydropower and thermal energy will solve future energy needs.

The most common energy now a days is coal and by burning fossils fuels, we are risking climate change as well as limiting our resources. Supplies won’t last forever especially at the rate we are going. By using sun, wind, and water as sources of energy, we have renewable energy which would not run out anytime as soon as we required. Those energy charges are low cost and solves pollution issues too.

Heat energy has been transferred from one place to another by three main processes and in convection, heat energy has been carried by the movement of particles of matter. In conduction, heat is transferred by particles vibrating. In radiation, heat is carried directly by electromagnetic waves.

Therefore, Yes, according to my point of view I strongly believes that solar cells, wind farms, tidal power, hydropower and thermal energy will solve future energy needs.

Learn more about coal on:

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Answer:

11.8/3.7= 3.1891891892

Explanation:

Divide 11.8 by 3.7 and instead of putting all of the numbers, just put 3.18

Answer:

False it is in the 17th century (1665)

Explanation:

He named the little blocks after cells (little rooms)

Answer:

Animal- Eukaryotic

Plant- Eukaryotic

Bacteria- Prokaryotic

Fungi- Prokaryotic

Protist- Prokaryotic

I'm not 100% happy with my answers so don't take my word on it that they will be 100% correct.

But anyway, Hope this is good.