Which of the following might explain how complex viruses evolved?
© A. Icosahedral viruses reproduces with helical viruses.
OB. Mutations in viral genes gave rise to offspring with variations in their shape.
© C. Viral genes mutated while dormant to produce new variations.
OD. Viruses started infecting new host cells.

Answers

Answer 1

Answer:i just took a test w this on it n i put D

Explanation:


Related Questions

Human actions cannot change Earth’s atmosphere. true or false? with explaining please I will award brainiest

Answers

Answer: false

Explanation:

there are many things humans can do to help the atmosphere. For example, humans can drive cars less, pollute less, and eat less steak. i'm not kidding. Most air pollution comes from methane from cow farts since there are so many cows in the world. (Over 2 billion !!!)

hope this helps

HAVE great DAY ^-^

In which list are the levels of organization in the human digestive system shown from lowest to highest?

Answers

Answer: I believe it would be A: epithelial cell, intestinal lining, intestine, digestive system, human body.

Hope this helps!!

Answer:

A—

Cell

Lining

Intestine

System

Body

Explanation:

This is from smallest to largest. In the system.

What is the effect of wildfires on biodiversity?

Answers

Answer:

it damages the earth's atmosphere and harm animals and the air we breath

Answer:

its a

Explanation:

well the answer makes sense because it might decrease some trees but it also gets rid of the bad and rotting trees so more vegetation can grow

Describe the role of ATP

Answers

Answer:

the main role of ATP is to provide energy

Explanation:

Which entry is in the wrong position in the table?

Answers

Explanation:

What is the entries you don't have enough stuff for us to find out an answer

Answer:

Its B allergies

Explanation:

Which level of organization is shown in the image?
a
cell
b
organ system
С
tissue
D
organ

Answers

Answer:

where is the picture? I can try and help

Hey mate, I wanna help but I don’t see any image.

When we look at stars, we notice that some appear brighter than others. Sirius looks much brighter than Rigel, but is it really brighter? Or is Sirius much closer to Earth, giving it the appearance of being brighter? Actually, Sirius is about one hundred times closer to Earth than Rigel. If the two stars were the same distance from Earth, Rigel would appear much brighter. -We use two terms to reference the brightness of a star: absolute magnitude and apparent magnitude. Absolute magnitude is the measure of the light given off by a star, while apparent magnitude refers to the amount of light received on Earth. The color of a star indicates its temperature. Blue-white stars are very hot, while orange-red stars are relatively cool. In the early 1900's Ejnar Hertzsprung and Henry Russell noticed that the higher the temperature of a star, the greater the star’s absolute magnitude. They developed a graph that depicts this relationship called the H-R diagram. Most known stars fit into a diagonal band that runs from the upper left to the lower right of the diagram. This diagonal band is called the main sequence. About 90% of all stars are main sequence stars. Most stars are currently classified using the letters O, B, A, F, G, K, and M, where O stars are the hottest and the letter sequence indicates successively cooler stars down to the coolest M class. Betelgeuse is in the red spectral class. It is one of the largest of stars with extremely high luminosity although it has a relatively low surface temperature. How would Betelgeuse be classified?

A. Giant
B. Supergiant
C. White Dwarf
D. Main Sequence

Answers

B.supergiant. //did this before

When we look at stars, we notice that some appear brighter than others. Sirius looks much brighter than Rigel, but is it really brighter Or is Sirius much closer to Earth, giving it the appearance of being brighter

Actually, Sirius is about one hundred times closer to Earth than Rigel. If the two stars were the same distance from Earth, Rigel would appear much brighter.

We use two terms to reference the brightness of a star: absolute magnitude and apparent magnitude. Absolute magnitude is the measure of the light given off by a star, while apparent magnitude refers to the amount of light received on Earth.

The color of a star indicates its temperature. Blue-white stars are very hot, while orange-red stars relatively cool. In the year of 1900's Ejnar hertzsprung and Henry Russell noticed that that the higher temperature of a star, the greater's the star absolute magnitude. They developed a graph that that depicts this relationship called H-R diagram.

Most knows stars fit into a diagonal band that runs form the upper left to the lower right of the diagram. This diagonal band is called the main sequence. About 90% of all stars are makn sequence stars.

Most stars are currently classified using the letters O,B,A,F,G,K and M, where O stars are the hottest and letter sequence indicates successively cooler stars down to the coolest M class.

Betelgeuse is the red spectral class. It is one of the largest of stars with extremely high luminosity although it has a relatively low surface temperature. Betelgeuse can be classified as supergiant. Thus option b is correct.

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The graph below shows the mass of plants as succession progresses. What is the
cause of the drop in the moss population?
Pine
Trees
Shrubs
Mass of Plants
Oak
Trees
Grasses
Mosses
Time
The formation of the climax community of the forest
Competition for light and resources with grasses
A lack of soil nutrients in the environment
Competition for light and resources with the oak tree

Answers

Answer:

Competition for light and resources with grasses

Explanation:

Mosses are small, flat brioftas that have no conductive vases, flowers, fruits and seeds. In a situation where a region has an intense density of trees as shown in the question above, mosses may be left with a limited amount of resources necessary for their survival, which will decrease their population. As a result, the moss will compete with other plant species.

In relation to the question above, the population of mosses would decline due to the competition for resources with grasses, this is because grasses have advantages in the absorption of resources, due to their biology.

How does the amount of rainfall affect the amount and types of seeds present on the Galapagos Islands?

Answers

The ground will get wet and the seeds will sink in the ground then t ground will dry up and the seeds will get stuck

Which descriptions refer to cirrus clouds? Select three options.

Answers

Answer:

wispy, high altitiudes, and ice crystals

Explanation:

Answer:

C

Explanation:


Sleet is precipitation made of small particles of ice. How does sleet form?

Answers

Answer:

Sleet is pellets of ice that form when snow falls into a warm layer and melts into rain. The rain then falls into a freezing layer of air that is deep enough to refreeze the raindrops into pellets. Sometimes the snow does not completely melt and the partially melted snowflakes refreeze into snow pellets.:

hope this helps!

Answer:

There must be a layer of air near the ground whose temperature is below freezing, where water turns to ice. Above this layer of freezing air must be a layer of warmer air. As snow falls through the warm air, it melts or partially melts into raindrops. It forms sleet before it reaches the ground.

Explanation:

:3

The picture shows a girl with a widow's peak.



The girl has a widow's peak because of her
genes, which are located in chromosomes in her cells' nuclei.
hormones, which are passed on from previous generations.
nutrition, and indicates her needs are met.
environment, in which it is an advantage.

Answers

What’s the question so we can help you?

How does disease affect blood pressure

Answers

Explanation:

The body has lots of mechanisms that can control the blood pressure, plus, changing the amount of blood the heart pumps, the diameter of the arteries, and volume of blood in the bloodstream. When a disease causes blood pressure to stay high, low, or in between, problems can arise.

A certain type of horse has two possible alleles for the color of its
coat: black (B) is dominant, while chestnut (b) is recessive. What
would be the phenotype of a horse with the Bb genotype?



A.black
B.chestnut
C.Black with chestnut spots
D.Chestnut with black spots

Answers

Answer:

A. Black

Explanation:

Answer:

.black

Explanation:

In humans, B is the allele for brown eyes and b is the allele for blue eyes. Two brothers both have brown eyes, but one of them has both the B and b alleles while the other only has B alleles. Which statement is true about the brothers?

Answers

Answer:

B is the dominate trait, and b is the recessive trait. Putting them together (Bb), would still mean that the brother would have brown eyes, since Bb means that the dominant trait is shown

bb- recessive trait (blue eyes)

Bb - dominant trait (brown eyes)

BB- dominant trait (brown eyes)

Hope this helps!

In Kingdom Animalia, there are is a wide variety of organisms such as humans, reptiles, fish, birds, insects, and mammals. These organisms are different from each other in many ways. Why would scientists classify all of these organisms into the same Kingdom?

Answers

All living organisms are classified into groups based on very basic, shared characteristics. Organisms within each group are then further divided into smaller groups.

Explanation:

Answer:

D :)

Explanation:

The chemical equation below summarizes the burning of a fossil fuel.
Fossil fuel + oxygen gas →
+ water + heat
Which substance belongs in the blank in the equation?
O A. Lactic acid
O B. Carbon dioxide
O C. Nitrogen
D. Ammonia

Answers

Answer: B. Carbon Dioxide

Explanation:

Fossil fuel can release methane and other hydrocarbon. The reaction is processed between methane and oxygen in the air. When this reaction takes place the result is Carbon dioxide, water, and lots of energy (heat)

Hope this helps!

Need help with #6 please:)

Answers

Answer:

high porosity

you need high porosity and high permeability for have an aquifer, which would made the water flow.

What is the term for deep cold waters that replace warm surface waters?

Answers

Answer: This process is known as upwelling

Explanation:

how does building a solar power plant slow down resource depletion?
A. It increase the supply of electricity from alternative sources
B. It reduces the cost of electricity from alternative sources
C. It reduces the demand for electricity overall
D. It increases the consumption of electricity from coal

Answers

Answer: A

Explanation:

A. It increase the supply of electricity from alternative sources

Answer:

A. It increase the supply of electricity from alternative sources

why do animals and plants need nitrogen

Answers

Answer:

They need Nitrogen to make Amino acid, DNA but the nitrogen in the atmosphere can't be used directly. Some nitrogen fixing bacteria fix it then it is able to use for plants and animals.

hope it helps!

Answer:

Plants and Animals need Nirogen and its Sufficent

Explanation:

Plants need Nitrogen especially Crops because they give protein with the help of nitrogen by the help of Rhizobium Bacteria.

With This Protein, Animals ( Herbivores) eat this for energy which contains nitrogen

What is the speed of a wave with a frequency of 6oHz and a wavelength of 20m

Answers

Answer:

speed = 1200 m/s

Explanation:

given data

frequency = 60 Hz

wavelength = 20 m

solution

we get here speed of a wave that is express as

speed = Frequency × wavelength    ...............................1

put here value and we get speed

speed = 60 × 20

speed = 1200

so speed of a wave is 1200 m/s

please help i really need this done a lot of points for a reliable answer please

Answers

Answer:

True

Explanation:

How do animals respond to stimuli?



Please help this is my last assignment for the year

Answers

The nervous system is stimulated from the environment through sensory receptors

What can scientists infer about the period of very early Earth from the fossilized remains of trees found under a lake?

Answers

Answer:There is a theory that terrestrial plants evolved from aquatic plants through a process of natural selection. Thus, by finding fossils of plants under the river, scientists may conclude that this theory is correct and that these fossils represent the ancestors of terrestrial plants.

The emergence of plants that survive on earth is a very important milestone for the planet, it is believed that these plants have evolved from green algae called Chlorophyta that have survived in marshy areas that had alternating periods of flooding and drought.Then the discovery of these fossils, through scientific experiments may conclude that the theory is correct

Explanation:

Answer:

The fossil record is the record of life on earth preserved in rock as fossils. The fossil record provides evidence of where types of plants and animals lived, how long they lived, how they died, and how they changed. It also tells us about Earth’s early environment and how it changed. The fossil record helps determine the age of rock formations by looking at how deep the fossils are buried in the rock. When a fossil is found above another fossil in a rock formation, the deeper fossil are considered older.

What can scientists infer about the period of very early Earth from the fossilized remains of trees found under a lake?

Explanation:

A) The fish ate the trees.X

B) The dinosaurs ate trees.X  

C) The area was once a forest. ****************************** C

D) The atmosphere lacked oxygen.X

When two liquids have the same osmotic pressure they're said to be
Question 6 options:


hypotonic.


hypertonic.


isotonic.


diffuse.

Answers

Answer:

Isotonic

Explanation:

Answer: isotonic is the Penn Foster test answer

if a woman tans throughout her life and becomes very dark - even though she naturally has fair skin bc of her fair genes - and she has children with a man who is also fair skinned, the theory of evolution by natural section suggests that she will have offspring with what skin tone? explain

Answers

Answer:

fair skin

Explanation:

she will have fair skin because her tannning isnt natural. it is what her actual genes are that will affect her children's skin tone, not how she alters her body

In cellular respiration, where do the high-energy electrons that move through the electron transport chain originate?

Answers

Answer:

The electrons are carried to the ECT by NADH and FADH+, which are reduced during glycolysis, pyruvate oxidation, and the Krebs cycle.

What is the largest object in the image above??

Answers

Answer:

The one to the extreme right

Explanation:

The graph shows the progression of size getting larger from left to right

At which point is crust neither created nor destroyed?
O island chain
O mid-ocean ridge
divergent boundary
O transform boundary

Answers

Answer:

transform boundary

Explanation:

At a transform boundary, crust is neither created nor destroyed. Therefore, option (D) is correct.

What is  transform boundary?

A transform boundary, also known as a conservative boundary or a strike-slip boundary, is a type of tectonic plate boundary where two plates slide horizontally past each other. Unlike convergent boundaries (where plates collide) or divergent boundaries (where plates move apart), transform boundaries involve plates moving alongside each other in opposite directions or in the same direction but at different speeds.

The movement occurs along a fault line, known as a transform fault. Transform boundaries are characterized by intense seismic activity, resulting in earthquakes. They can also cause the formation of prominent landforms, such as transform faults, fracture zones, and offset rivers or valleys. Examples of transform boundaries include the San Andreas Fault in California, which separates the North American and Pacific plates, and the Alpine Fault in New Zealand, separating the Pacific and Australian plates.

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