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Answer:

the bottom

Explanation: The air at the top of the mountain is going to be much less dense than the air at the bottom of the mountain because it is affected less by gravity.

Explanation:

coal , petroleum,Net Gas , Nuclear are the non renewable source of energy .

so

False is the answer of your question

Answer:

There will be more yellow-colored frogs in the population than red-colored frogs

Explanation:

Available data:

Number of snake attacks             Frog color

145 Approx                                          Green

180 Approx                                          Blue

125 Approx                                          Yellow

145 Approx                                          Red

The phenotype of individuals and the environment where they live, interact and determines the genes´ destiny in space and time. The result of this interaction and the gene destiny is Natural Selection. Natural selection selects beneficial alleles and increases their frequency in the population.

The attack by snakes is acting as a selective pressure on the frogs´ population. It is an ecological pressure that is modeling the frogs´ phenotype.

Animals that suffer more attacks are the blue ones, followed by green and red frogs. Those that suffer the fewest number of attacks are the yellow individuals.

So natural selection will be acting on this population favoring the alleles that code for yellow color. Genes that express yellow color increase more the frogs´ fitness than genes that code for the other colors. So natural selection increases the frequency of genes coding for yellow color and will decrease the frequency of the other alleles. Probably the less favored will be genes that express blue.

Answer:

Animals move for a variety of reasons, such as to find food, a mate, a suitable microhabitat, or to escape predators. For many animals, the ability to move is essential for survival and, as a result, natural selection has shaped the locomotion methods and mechanisms used by moving organisms.

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Answer:

D

Explanation:

The other sources aren't trusted

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Answer:

So when the first animals moved onto land, they had to trade their fins for limbs, and their gills for lungs, the better to adapt to their new terrestrial environment

Explanation:

Answer:

abilites

Explanation:

Answer:

b

Explanation:

Meiosis has both similarities to and differences from mitosis, which is a cell division process in which a parent cell produces two identical daughter cells. Meiosis begins following one round of DNA replication in cells in the male or female sex organs.

Answer:

Which of the following refers to a community of living organisms and the way they interact with nonliving parts of their environment? Ecosystem.

Explanation:

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Answer:

Hey mate.....

Explanation:

This is ur answer.....

Earth is actually composed of three major parts or layers: the solid earth (which includes the parts near or at the surface, the asthenosphere and lithosphere), the atmosphere (the blanket of air that envelopes the earth), and the hydrosphere (the water parts, including ocean, streams and air moisture).

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Answer:

4/16

Explanation:

It is given that the alleles of the first locus = A dominant and recessive a

The allele of the second locus = B dominant and the recessive b.

Now if fish with AABB mates with the aabb fishes, then to tell the proportion of the F2 fish which shows either the dominant phenotype at the [tex]$\text{first locus}$[/tex] and also a recessive phenotype at the [tex]$\text{second locus}$[/tex].

So for this, the recessive phenotype at the [tex]$\text{first locus}$[/tex] as well as the recessive phenotype at the [tex]$\text{second locus}$[/tex] is in the ratio of 4/16.

Answer:

C

Explanation:

Answer:

C) A tall pea plant, because tall is the dominant allele

Its characteristic is the high temperature and the division of two seasons: rainy in summer and dry in winter. In regions affected by this type of climate, it is not possible to notice the change of seasons.

Answer:

b. a semi-permeable double layer of phospholipids that have hydrophilic heads and hydrophobic tails

Explanation:

B is correct as the cell membrane is selectively semi-permeable. It is selectively semi-permeable because this quality allows it to control what can and can't enter the cell, and how it does so.

The cell membrane also has a phospholipid bi-layer comprised of a double layer of phospholipids which have hydrophilic head and hydrophobic tails. This is because the heads are made of phosphate and are polar and are therefore attracted to water (hydrophilic), while the tails are made of lipids (i.e. fats, oils) which do not mix with water and are therefore hydrophobic.

The properties of each phospholipid is also why they form the double layer structure, the hydrophilic heads naturally face outwards into the water and protect the hydrophobic tails on the inside.

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Answer:

Explanation:

l

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Answer:

I love my hometown as I love my home and I like to stay in the town streets as I stay in the rooms of my house.”

Everyone loves his hometown or city dearly. It is like loving the home or the place where one passes one’s life. My town is close to a canal that flows out of the river some eight kilometers away. Gardens and parks surround it on all sides. Beautiful flowers and tasty fruits of all the seasons are to be found welcoming you as you approach the town. Grassy grounds border the town where children, men, and women are found playing in the afternoon.

I love my hometown as I love my home and I like to stay in the town streets as I stay in the rooms of my house.”

Everyone loves his hometown or city dearly. It is like loving the home or the place where one passes one’s life. My town is close to a canal that flows out of the river some eight kilometers away. Gardens and parks surround it on all sides. Beautiful flowers and tasty fruits of all the seasons are to be found welcoming you as you approach the town. Grassy grounds border the town where children, men, and women are found playing in the afternoon.

The town has two colleges, one for boys and another for girls. It also has four high schools and six middle schools. The students are mostly from middle-class or rich families, but now some working-class people like laborers have started sending their children to schools. We have quite high standards of education as we have in some famous colleges and schools in the big cities. The reason is the hard work that teachers put in and the interest that most of the students take in studies.

The town has a fine public hospital where most government doctors attend to patients as well as they can the public dislikes the few careless doctors. They are often transferred on the public complaint. Of course, the hospital is often overcrowded and suitable medicines are in short supply. The richer people go to private clinics where they get medical treatment of their choice.

The town municipal committee keeps the town clean, but sometimes garbage heaps collect, and the whole place begins stinking (giving an unpleasant smell). The electricity department takes care that the streets are brightly lit at night. When people have complaints about its working, it begins performing better. The police and other government departments in the town, on the whole, have been performing their duties equally well. The people of the town have now started complaining of rising corruption in government offices. It is time we checked it with most strictly. When I am away from my town, I feel as if I am away from something dearest in life.

Answer:

When a phenotype produced by certain alleles helps organisms survive and reproduce better than their peers, natural selection can increase the frequency of the helpful alleles from one generation to the next – that is, it can cause microevolution.

Explanation:

Because of having dominant traits certain traits increase in frequency in a population because they have.

A phenotypic trait is a specific variant of an organism's observable characteristics. Phenotype refers to any measurable, observable and obvious characteristics of an organism. It can be either hereditary or environmental, but usually occurs as a collection of both.

When any allele tends to determine the phenotype, when passed from parent to child, it called as dominant allele. In case of  homzygosity as well as heterozygosity, dominant allele can express itself.

Recessive in contrast is, when genotype is homozygous, the trait expressed is referred to as recessive trait. Therefore, certain traits increase in frequency in a population.

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Answer:

Option A, It makes them less dense than water, thus aiding in buoyancy

Explanation:

Lipids stored with in the body of planktons make them capable to float in water against the buoyancy force of water in the down ward direction by reducing the overall density of the planktons. Hence, option A is correct

Answer:

Pollution is the presence of harmful materials in the environment of a substance that has harmful or poisonous effects. Nitrogen dioxide (NO2) and Carbon monoxide (CO) are 2 pollutants of air and Industrial Waste and  Sewage and Wastewater are 2 pollutants of water.

Answer:

B) 2 identical cells

Explanation:

"Mitosis is a type of cell division which produces two identical diploid daughter cells. "

Answer:

In humid conditions where surrounding air cannot hold further water vapour, sweat evaporates slowly, if at all. As a result the body heats up. it is difficult for the sweat to evaporate and in high humidity conditions we tend to sweat more. This explains why it feels so much hotter in high humidity.

answer:

we can't pollute water because there are creatures and organisims that live in the water so if we pollute it then they will die, besides you can filter the water to get rid of salt then you're able to drink the water and also use it for many other purposes.

Answer:

what's the complete question?

Answer:

yeah great question.

Explanation:

Answer:

Explanation:

It is sometimes used in medicine to examine body fluids. The chemicals of interest (ones that should not be in the body) will separate out differently than the fluids that should be there.

quantity of the substance remaining = initial quantity of the substance * (.5)^(time elapsed/half life of the substance)

2.50 = 20 * (.5)^(19.2/x)

The half-life period of the given sample of the radioisotope is equal to 6.41 hours.

The half-life of a radioactive substance is defined as the time that is required to reduce the original quantity of a radioactive element to half after decay.

Half-life of a radioactive element is the characteristic of the element and does not depend upon the initial amount of the radioactive substance.

Given, the original amount of the radioisotope, N₀ = 20.0 g

The remaining amount of the radioisotope, N = 2.50 g

The time for which decay occurs, t = 19.2 hours

Consider that k is the rate constant of the decay of radioisotope,

[tex]k =\frac{2.303}{t} \times log \frac{N_0}{N}[/tex]

[tex]k =\frac{2.303}{19.2} log \frac{20}{2.50}[/tex]

k = 0.108 hr⁻¹

The half-life time of radioisotope can be calculated from the below mentioned formula:

[tex]t_{\frac{1}{2}} =\frac{0.693}{k}[/tex]

[tex]t_{\frac{1}{2}} =\frac{0.693}{0.108}[/tex]

[tex]t_{\frac{1}{2}} =6.41 hrs[/tex]

Therefore, the half-life period of the given sample of the radioisotope will be to 6.41 hours.

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Answer:

It should be disposed of because its dirty and no one wants a disease from it if it goes into you somehow

Explanation: