A group of students is measuring the number of paper bags that are brought to a recycling center in a single day.
What are the students doing?
A. Analyzing
B. Collecting data
C. Stating a problem
D. Making a conclusion

The  transformation maps rectangle QRST to rectangle Q’R’S’T’ is reflection.

Reflection of light is an optical phenomenon in which a visible electromagnetic wave strikes a given medium, returning to the original medium in which it propagated.

In this case, reflection of an object occurs in such a way that it is equally reflected where the same points are in the same places.

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Answer:

Primary lymphoid organs: the bone marrow and the thymus

secondary lymphoid organs: adenoids tonsils spleen

Answer:

B

Explanation:

The advantage of cyanobacteria over alternate biofuels is that multiple processing steps can be avoided.

Cyanodiesel, a byproduct of cyanobacteria, has unlimited growth potential and are used in various fields of biotechnology.

⇒ Transform solar energy into chemical energy by the process of photosynthesis

⇒ Fixing of atmospheric nitrogen, helping in the increase of soil fertility

⇒ Widespread applications in pharmaceuticals and agriculture

The advantage of cyanobacteria to produce isobutanol over alternate biofuels is that multiple processing steps required in biofuel production from other sources can be avoided. So option B is correct.

Cyanobacteria are recently been engineered to produce a variety of chemicals, such as ethanol, Isobutanol, and Isoprene, directly from solar energy, carbon dioxide, and water. This makes cyanobacterium a potential new cell factory for the production of energy and chemicals to meet global energy and climate change challenges.

Synthetic cyanobacteria are engineered through heterologous biosynthesis to create value-added chemicals through photosynthesis. Several chemicals have been successfully generated in synthetic cyanobacteria.

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Answer:

Fungal infections (fungal infections are called mycoses) are among the most common diseases seen in temperate fish. Because fungal spores are found in all fish ponds and create problems in stressed fish. Poor water quality can also lead to an increase in fungal infections in an otherwise healthy fish population

Explanation:

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Trucks, houses and swimming pools are measured using: millimetres. Thus, option "C" is correct.

If it is four millimetres wide on the drawing, then you can divide 16 by 4 to find that every four meters in real life are equivalent to one millimetre in the drawing.

Thus, option "C" is correct.

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Answer:

Explanation:

Answer:

an organism that can produce its own food using light, water, carbon dioxide, or other chemicals.

Like a Plant

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The charge of the electrical impulses sent from stimuli is extremely positive. Thus, the correct option is A. The net charge of such electrical impulses is positive because of the positively charged ions of the Na+.

An electrical impulse may be defined as a nerve impulse that contains an electrical signal which travels throughout the body by the axon terminal.

In the resting potential state, the potential difference is -80mV, while after reaching the electrical impulse it changes to +40mV. This happens due to an electrical imbalance between sodium and potassium influx and efflux.

Therefore, the correct option is A.

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Answer:

DNA looks like a twisted ladder!

Explanation:

It's made up of two linked strands that wind around each other to resemble a twisted ladder in a helix-like shape. Each strand has a backbone made of alternating sugar.

Answer:

DNA looks like a twisted ladder!

Explanation:

It's made up of two linked strands that wind around each other to resemble a twisted ladder in a helix-like shape. Each strand has a backbone made of alternating sugar.

Globular clusters is a type of star system where the stars are tightly bounded by gravity.

A star system can be defined as small number of stars that orbit around each other and are bound by gravitational force of attraction.

It is also called a stellar system.

Globular clusters is a type of star system with the following features;

Hence, globular clusters is a type of star system.

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Answer:

D) Globular clusters

Explanation:

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Hadean Eon (Precambrian Time):

Archaean Eon (Precambrian Time):

Proterozoic Eon (Precambrian Time):

Cambrian Period:

Ordovician Period:

Silurian Period:

Devonian Period:

Carboniferous Period:

Permian Period:

Triassic Period:

Jurassic Period:

Cretaceous Period:

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Answer:

tRNA

Explanation:

the transfer RNA is an RNA molecule that serves as a link between the mRNA and the growing amino acid chain that forms a protein.

"Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. " The genotype for the offsprings is Pp only. Option C. This is further explained below.

Generally, the genotype is simply defined as a person's unique set of genes.

In conclusion, Flowers with a purple hue are more likely to bloom than those with pink hues since purple is a dominating feature.

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Speciation occurs when there is genetic divergence between two separated groups that used to belong to the same population. Option B) one group live with a stronger predator.

When the original species is divided and placed in different environments, where they can reproduce for many generations, many changes or mutations will occur in each group.

These changes will depend on each group's environment and its ecological pressures.

Pressures act on individuals and make them adapt to the new environmental conditions.

Generation after generation, the genotype of individuals will increase the fitness to survive and reproduce. The fixation of mutations will increase the difference among both groups, up to the diverging point into two new species.

One of the main factors that lead to speciation is separating an original population into two or more different groups divided by natural or atificial barriers that can not be crossed. This is the case of allopatric speciation.

After the emergence of the barrier, there is an interruption in the genetic interchange between these groups. New mutations might occur in each group due to environmental differences, leading to genetic divergence over time.

Options

a. have one group breed twice as often as the other.

Assuming identical environmental conditions for both groups, if the genetic charge does not change, there should not be speciation even if one of the populations gets to reproduce more frequently than the other.

b. have one group live with a much stronger predator.

The fact that one of the groups is exposed to a stronger predator and the other group is not, changes the environmental conditions for one of them. The group exposed to the stronger predator will suffer mutations that lead it to adapt to the presence of this new predator. In this case, there will be a genetic divergence between the two groups and hence, speciation.

c. keep the two groups apart, but in identical ecosystems.

Under identical environmental conditions, there is no speciation.

d. force the two groups to breed with each other.

There is genetic flow and the same genetic charge, so there is no speciation.

The correct option is B) have one group live with a much stronger predator.

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Answer:

The opossum, which is native to North America, and the kangaroo, which is native to Australia, are both marsupials.

The nutrient cycle is defined as the transportation of nutrients from different components of the environment. A living state refers to the amount of minerals present in an ecosystem.

The nutrition cycle is divided into two categories. The following are some of them:-

Phosphorus is a nutrient cycle that occurs as a result of sedimentation. The following are the phosphorous' sources, as stated in the question:

Leaching is the process of a nutrient dissolving when raining and enhancing the nutritious quantity of the soil.

Mineralization and immobilization reactions mediated by the microbial biomass pool, as well as the solubilization of inorganic phosphorus-containing minerals by organic acids, inorganic acids, and chelating agents produced by soil organisms, are all part of the phosphorus cycle.

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The answer is

The advantage of using smaller contour interval  is that you can see the detail of mountain.

A smaller contour interval  is used for showing small details .A contour interval in surveying is the vertical distance or the difference in the elevation between the two contour lines in a topographical map

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Answer:

C.  Plant, Animal, Fungi, Protist, Bacteria 

Explanation:

Another word for bacteria would be monera. The more technically correct version of the answer would be animal, plant, fungi, protist, and monera. However, monera is basically bacteria. So C is your best answer.

Answer:

c

Explanation:

Life used to be organized into 2 groups : plants and animals by Swedish botanist Carl Linneaus. Then it was again classified by American ecologist R. H. Whittaker into 5 kingdoms :

The option which lists these options is c (kindly note that bacteria are classified under Kingdom Monera)

When two different forms of a virus infect the same cell, the host cell may manufacture viral particles by a process called antigenic shift.

An antigen is any molecule or molecular structure that may trigger a suitable immune response in the host.

An antigen can be the target for antibody binding during classical adaptive immune responses.

In conclusion, when two different forms of a virus infect the same cell, the host cell may manufacture viral particles by a process called antigenic shift.

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Answer:

Living things are divided into five kingdoms: animal, plant, fungi, protist and monera. Living things are divided into five kingdoms: animal, plant, fungi, protist and monera.

Are the daughter cells produced by mitosis genetically unique substantive, cannot divide again substantive, have half the DNA of the parent cell substantive, and are genetically identical to each other?

Answer:

At the end of meiosis and cytokinesis, four haploid cells are produced from a single diploid cell. These haploid daughter cells have half the number of chromosomes as the parent cell and are not genetically identical to the parent cell.

The fossilized carbon found in the remains of ancient plants and animals is said to be carbon 14, used for dating fossilized living things.

Carbon 14 is a natural radioactive isotope of the element carbon, receiving this number because it has an atomic mass of 14. This isotope has two more neutrons in its nucleus than the stable isotope carbon 12. C14 is formed continuously in the atmosphere and is the result of the process of cosmic ray bombardment.

With this information, we can conclude that the fossilized carbon found in the remains of ancient plants and animals is said to be carbon 14, used for dating fossilized living things.

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Answer:

Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies - or 'replicates' - its chromosomes, and then splits the copied chromosomes equally to make sure that each daughter cell has a full set.

Explanation:

Answer:

It controls all voluntary movement, such as speech and walking, and involuntary movements, such as blinking and breathing. It is also the core of our thoughts, perceptions, and emotions.

Explanation:

None.

"Chromosomes" are the structures in the nucleus that contains the DNA

The type of organisms that marine scientists believe may provide clues to marine viruses are microbes.

Marine viruses are specific types of viruses found in marine environment or habitat.

Marine viruses like other viruses need to infect a living host to survive and replicate themselves. Marine viruses infect almost every living organism in the marine habitat.

Marine viruses are generally known to be microbe killers. Marine viruses infect their host cell by inserting their genetic material and hijacks the machinery inside the cell in order to replicate.

Therefore, the type of organisms that marine scientists believe may provide clues to marine viruses are microbes.

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Answer:

The variety of life in the world or in a particular habitat or ecosystem

The type of point mutation that is depicted here is missense mutation.

Missense mutation is defined as the type of point mutation where by a mistake occurs in the coding of DNA leading to the change of the DNA base pair.

From the example given, leucine (c t a) is transformed to valine (g t a) which is a different base pair.

Therefore, the type of point mutation that is depicted here is missense mutation.

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Answer:

missense mutation. aka the first answer

Explanation: