A food chain is a simple way of showing the relationships between organisms in an ecosystem. What do we call a diagram that shows the complex feeding relationships between organisms in an ecosystem?

Answer:

There are no known organisms because of the lack of sunlight necessary for photosynthesis to produce these organisms

Explanation:

The bathyal zone is less densely populated. Sunlight does not reach this zone, meaning primary production, if any, is almost nonexistent

Answer:

The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged). Atoms have different properties based on the arrangement and number of their basic particles.

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Explanation:

Answer:

humans use their knowledge to locate resources.

Explanation:

The carrying capacity can be defined as the maximum number of individuals in a population of a species that an ecosystem or region can support on the basis of availability of water, food, habitat and other needs necessary for survival. Sometimes, the population of the species increases exponentially exceeding the carrying capacity of an ecosystem when the resources available are surplus.  

The human populations are not limited by the carrying capacity of their ecosystem this is because of the fact human beings possess special intellectual and thinking abilities which make them capable of availing themselves resources. They posses knowledge which allows them to search, and find resources even from the earth extreme locations not suitable for survival.

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Answer:

evolution

Natural selection

Explanation:

Answer:

The first blank is evolution and the second black is natural selection.

Explanation:

Answer:

B. separating strands of DNA

Gel electrophoresis used for separating strands of DNA

Electrophoresis can be defined as a technique used to separate molecules of DNA, RNA or protein molecules on the basis of their electrical charge and size

Below are four major components of gel electrophoresis:

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Answer:

It is a seeded vascular plant.

It does not depend on insect pollination.

Explanation:

The complete question is: A scientist has discovered a new plant species in the Amazon rainforest. She tells her fellow scientists that the plant she has found produces a cone. What might they say about how this plant is different from an angiosperm? Its seeds have one or two cotyledons. Its stems' vascular bundles are scattered. It does not depend on insect pollination. It is a seeded vascular plant.

The correct option would be that the plant is a seeded vascular plant and does not depend on insect pollination.

Gymnosperms are the only group of plants that produce cones. They are one of the plant groups that have vascular tissues in the form of xylem and phloem as well as been able to produce seed in the form fo cones. Hence, they are said to be seeded vascular plants.

Gymnosperms also carry out their pollination by relying solely on wind for the transfer of their pollen grain to the female organ. In other words, they do not depend on insect for pollination.

Answer:

30% thymine

Explanation:

If 30% of Adenine is present, it would be reasonable to assume that 30% of Thymine will be present, as the ratio between the two complementary nitrogenous bases will be roughly equal. Therefore, that leaves us with 40% between Cytosine and Guanine.

Answer:

Urine is a liquid by-product of metabolism in humans and in many other animals. After the filtration of blood by kidneys, urine is produced. It is them passed through the ureters to the bladder to store it. While urinating, the urine is passed from the bladder through the urethra to discharge it.

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Answer:

Ofcourse it does

Explanation:

Imagine one person have flu and he or she goes to met someone who is healthy but when they talk other infected person's flu goes to other healthy person and that new infected person goes to another and they go to another and thats how it seperate. But we have solution for this the first infected person need to wear mask so that his or her flu don't pass out to anothers.

Answer:

Silk is used to make clothes

Explanation:

Answer: B

Explanation:

The GPS gives more accurate information .

The Global Positioning System (GPS) is a U.S.-owned utility that provides users with positioning, navigation, and timing (PNT) services.

Three types of GPS systems are:

Hence, A is correct option

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Answer:

5.7 m/s     

Explanation:

The computation of Sheila 's velocity right after she gets thrown out of the bike is shown below:

1) The Physical principle: conservation of momentum.

If there is no net external force operating on a system, so the system's total momentum is conserved

The momentum, p, is a vector magnitude that is determined as the product of the mass by the velocity:

P = mv.

2) Taking into account therefore that there is no net force on the device, Sheila and the momentum of the bike are the identical pre and post collision.

Based on this, the calculation is as follows

Momentum before the collision:

       [tex]P_1 = (mass\ of\ Sheila + mass\ of\ the\ bike) \times velocity[/tex]

       [tex]P_1 = (60kg + m) \times v_1[/tex]

= 340 kg m/s

Now Momentum after the collision:

      [tex]P_2 = mass\ of\ sheila \times velocity\ of\ Sheila + mass\ of\ the\ bike \times velocity\ of\ the\ bike[/tex]

[tex]P_2 = 60kg \times v_2 + m \times 0 = 60kg \times v_2[/tex]

[tex]P_1 = P_2[/tex]

[tex]= (60kg + m) \times v_1[/tex]

[tex]= 60kg \times v_2[/tex]

[tex]= 340 kg .\ m/s[/tex]

[tex]= 60kg \times v_2[/tex]

[tex]v_2 = \frac{340\ kg .\ m/s }{60\ kg}[/tex]

= 5.7 m/s     

The velocity of Sheila immediately after she is thrown from the bike is 5.67 m/s.

The given parameters;

The velocity of Sheila immediately after she is thrown from the bike is calculated as follows;

P = mv

where;

v is the velocity Sheila

[tex]v = \frac{P}{m} \\\\v = \frac{340}{60} \\\\v = 5.67 \ m/s[/tex]

Thus, the velocity of Sheila immediately after she is thrown from the bike is 5.67 m/s.

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Answer:

See the answer below.

Explanation:

The correct mRNA sequence from the DNA according to the base pairing rule should be:

                       AAU GCG UUG ACC GAU UAA

Instead of:

                        AAU GCG UGA CCG AUU AAC

This thus means that some of the nucleotide bases have been wrongly substituted.

The most important change is the codon 'UUG' becoming 'UGA', while the former codes for the amino acid leucine, the latter represents a stop codon. A  stop codon will result in a non-functional or defective protein.

Hence, the type of mutation is nonsense mutation which results in a sudden cessation of protein synthesis as a result of a codon being prematurely changed to a stop codon.

The significance of this kind of mutation is that a defective on non-functional protein will result which will have a serious phenotypic implication in organisms.

Answer:

It is kept inside to absorb the CO2 released by the germinating seeds.

Explanation:

It means it will create a cycle for the flask. So, an equal volume of water rises up in the tube.

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Answer:No her diet does not. She is currently eating 128.52 calories each for protein, 289.17 calories from fat, and 1413.44 calories from carbs. This means she is consuming 6.6% of her diet from protein, 14.9%, of her diet from fat, and 73.2% of her diet from carbs.

Explanation:

Answer;

pteridophyte

Explanation;

Other characteristics of pteridophyte includes;

Answer: RNA

Explanation:

Nearly all the RNA found in a typical eukaryotic cell is rRNA. Transfer-messenger RNA (tmRNA) is found in many bacteria and plastids.

What is generally found both inside and outside of the nucleus of a eukaryotic cell is ; RNA

RNA is formed in eukaryotic cells when DNA contained in the nucleus of the cell is transcribed/synthesized. The transcribed RNA is then moved out of the nucleus into the cytoplasm.

The RNA contained in the cytoplasm is later transcribed into protein in the cytoplasm of the cells . therefore RNA is contained both inside and outside the nucleus of a eukaryotic cell.

Hence we can conclude that what is generally found inside and outside the nucleus of a eukaryotic cell is RNA

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Answer:

The correct answer is : option B.

Explanation:

Hardy–Weinberg equilibrium is a mathematical model that states that genotype percentage or frequency in a population and allele in a population remains stable or constant to generations if there are no evolutionary influences present.

Hardy Weinberg equation is :

            P²+2pq+q² = 1

Here, p² represents the frequency of genotypes dominant homozygotes (AA) in a population in equilibrium. The term 2pq represents the frequency of heterozygotes (Aa)  as there are two ways of developing heterozygous individuals either dominant from the egg and recessive from sperm or vice versa. and the term q² represents the frequency of recessive homozygotes (aa).  

Thus, the correct answer is : option B.

There are two ways that a heterozygous individual can arise: either by receiving a recessive allele from the egg and a dominant allele from the sperm, or by receiving a dominant allele from the egg and a recessive allele from the sperm, the frequency of the heterozygous allele is multiplied by 2 (option B).

The Hardy–Weinberg equation is an equation which expresses the principle of Hardy-Weinberg equilibrium.  The Hardy-Weinberg equilibrium states that in the absence of external evolutionary factors which disturbs equilibrium, the amount of genetic variation in a population will remain constant from one generation to the next.

The Hardy Weinberg equation is given as: p² + 2pq + q² = 1

In the equation above,

Since there are two ways that a heterozygous individual can arise: either by receiving a recessive allele from the egg and a dominant allele from the sperm, or by receiving a dominant allele from the egg and a recessive allele from the sperm, the frequency of the heterozygous allele is multiplied by 2.

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Answer:

I have put the question like this ;

Tiles

1. construct a hypothesis

2. communicate the results

3. test the hypothesis

4. make observations

5. analyze the results and

make a conclusion

6. ask questions

Pairs

A. Bread, when kept in the open for a

long time, shows the presence of mold.

B. What causes mold growth on bread?

C. Changes in temperature may affect

the growth of mold on bread.

D. Keep the bread in different locations,

changing the temperature at each location.

E. Increased temperature leads to the

growth of mold.

F. Make a presentation of the data, and

explain it to the class.

Explanation:

1- C ( this is an assumption; a hypothesis is always based on an assumption.

2- F ( this states to share the results with other classmates).

3- D (this is a description of an experiment you could conduct; you test a hypothesis (usually) by conducting an experiment.

4- A (this is something you could observe during the experiment, therefore it is an observation).

5- E (this sentence is a conclusion).

6- B (This is an actual question)

Answer:

number of nitrogen bases

Explanation:

The correct answer would be the number of nitrogen bases.

A defective protein is usually caused by mutation, which is defined a change in the DNA sequence of an organism.

Mutation can occur in a variety of ways including:

1. Deletion of nucleotide base sequence in the DNA

2. Addition (insertion) of nucleotide base sequence in the DNA

3. Duplication of nucleotide sequence in the DNA

A change in number of phosphate molecules, sequence of subunits DNA and sequence of sugar molecules if possible in nature, do not lead to mutation if the change does not affect the sequence of DNA.

Hence, the correct option is number of nitrogen bases.

Answer:

The correct answers are option A and B

Explanation:

The first colorimeter is reliable because the the reading it is showing is same for all the times the experiment is done. Though the result obtained is wrong but it is reliable.

The second colorimeter is valid and reliable because it is showing the correct results again and again. This is valid result as it is giving the result same as that of actual readings.

Answer:

structural adaptation

Answer:

Adaptational

Explanation:

It needs to adapt to the different variety of food and drinks.

Answer:

here's is your answer buddy

Explanation:

The plants in the F1 generation were allowed to self-pollinate. The plants in the P generation are true breeding.

Answer:

dentifying the Generation For each of the following statements, indicate whether the statement describes the P generation, F1 generation, or F2 generation.

The plants in the F1 generation were allowed to self-pollinate.

The plants in the P generation are true breeding.

After a cross, there are three times as many tall plants as there are short plants in the F2 generation.

Explanation:

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Answer:

Most tides are semidiurnal, which means they take place twice a day. For example, when an area covered by the ocean faces the moon, the moon's gravitational force on the water causes a high high tide. As the Earth rotates, that area moves away from the moon's influence and the tide ebbs.

Explanation:

Answer:

D. The moons gravity and Earth’s rotation

Explanation:

Answer:

Microbiologists are essential in helping us to treat diseases. Many work as biomedical scientists in hospitals and laboratories: testing samples of body tissue, blood and fluids to diagnose infections, monitor treatments or track disease outbreaks.