Parasites are organisms that live in or on a host organism, obtaining essential nutrition for themselves from the host. Parasites rarely kill their hosts, however. Which explanation BEST describes why evolutionary pressures selected for parasites that do not kill the host?

Answers

Answer 1

Answer: Parasites that kill the host lose their source of nutrition or energy and would be less likely to survive.

Explanation:


Related Questions

How does the ocean interact with land and air?

Answers

Answer:

Explanation:

One way that the world’s ocean affects weather and climate is by playing an important role in keeping our planet warm. The majority of radiation from the sun is absorbed by the ocean, particularly in tropical waters around the equator, where the ocean acts like a massive, heat-retaining solar panel. Land areas also absorb some sunlight, and the atmosphere helps to retain heat that would otherwise quickly radiate into space after sunset.

The ocean doesn't just store solar radiation; it also helps to distribute heat around the globe. When water molecules are heated, they exchange freely with the air in a process called evaporation. Ocean water is constantly evaporating, increasing the temperature and humidity of the surrounding air to form rain and storms that are then carried by trade winds. In fact, almost all rain that falls on land starts off in the ocean. The tropics are particularly rainy because heat absorption, and thus ocean evaporation, is highest in this area.

Outside of Earth’s equatorial areas, weather patterns are driven largely by ocean currents. Currents are movements of ocean water in a continuous flow, created largely by surface winds but also partly by temperature and salinity gradients, Earth’s rotation, and tides. Major current systems typically flow clockwise in the northern hemisphere and counterclockwise in the southern hemisphere, in circular patterns that often trace the coastlines.

Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth’s surface. Without currents in the ocean, regional temperatures would be more extreme—super hot at the equator and frigid toward the poles—and much less of Earth’s land would be habitable.

Strands of DNA are tightly coiled in
A. DNA
B. Base pairs
C. Chromosomes
D. Mitochondria

Answers

Answer:

D. Mitochondria. Mitochondira is the powerhouse of the cell, where DNA is stored.

Explanation:

Identify which of Newton's Laws is being described in the examples below:

Answers

9. 2nd law
10. 1st law
11. 3rd law
12. 3rd law

which are characteristics of a eukaryotic cell? A. single cellular, has nucleus.
B. Multicellular, has nucleus.
C. single cellular, has no nucleus.
D. Multicellular, has no nucleus.

Answers

Answer:

A eukaryotic cell is much more complex than a prokaryotic cell. Eukaryotic cells usually make up more complex organisms and have organelles such as endoplasmic reticulum, Golgi apparatus, mitochondria, a nucleus, and lysosomes. A prokaryotic cell only has circular chromosomes and is much smaller than a eukaryotic cell. Most single celled organisms are prokaryotes.

Explanation:

B. Multicellular, has nucleus

Which of the following does biodiversity NOT contribute to?

a
Food
b
Clothes
c
Wireless Internet
d
Medicine

Answers

in my opinion i would say c
I also say c wireless internet

What is the dew-point temperature at which a cloud formation began?

Answers

Answer:

The dew temperature at which cloud formation is formed is 6°C

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. The ancient whale is extinct and is believed to be an ancestor of the present-day whale.

What do these skulls most likely show that supports Darwin’s theory of evolution?

All populations can adapt and survive.

Only some organisms have a common ancestor.

Populations change slowly over time.

Populations rapidly become extinct.

BRAINLY ANSWER!!! 10 POINTS!!

Answers

Explanation:

its 3 if you havnt done it already

What evidence have you discovered to explain how cells are organized in the body, similar to the way dots in pointillism art is organized.

Answers

Answer:

it depends where the the muscle is located and what is the purpose

Explanation:

The diagram on the left shows the layers of Earth's atmosphere and how temperature changes with altitude. The diagram on the right shows the layers of Venus' atmosphere and how temperature changes with altitude. Both diagrams indicate the altitude below which 90% of each atmosphere's mass is located.


According to the diagrams, which of the following statements is true?
A.
90% of the mass of Venus' atmosphere is within 10 km of the surface.
B.
The upper part of Venus' troposphere is about 200°C colder than the upper part of Earth's.
C.
Venus' troposphere is several times thicker than Earth's troposphere.

Answers

b i think ??
sorry if wrong

According to the diagrams. the following statements which is true is the upper part of the Venus' troposphere is about 200°C colder than the upper part of the Earth's atmosphere. Thus, the correct option is B.

What is the relation between troposphere and temperature?

As the elevation increases, there is less air above us thus the pressure keeps on decreasing. As the pressure decreases, air molecules spread out further and expand in air, and the temperature of the atmosphere decreases.

Temperature of the atmosphere decreases with the increase in altitude because the troposphere is warmed from below, through the absorption and re-emission of incoming solar radiation by the Earth's surface, rather than it is being warmed from above through the incoming solar radiation.

According to the given diagram, the statement which is true is that the upper part of Venus' troposphere is about 200°C colder than the upper part of Earth's.

Therefore, the correct option is B.

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PLEASE HELP ME QUICK!!! Which of the following human activities unbalances the carbon cycle by releasing extra carbon into the atmosphere? Choose all that apply.
burning fossil fuels
deforestation

planting trees

recycling & reusing things we would normally throw away
using vehicles that run on gas

using electric vehicles

Answers

Burning fossil fuels
Deforestation
Using vehicles that run on gas
If I’m wrong I’m so sorry
burning fossil fuels - this directly releases CO2
deforestation - the machines used release CO2
using gas cars - the cars release CO2

Which of the following is not a true statement:

Physical erosion can break rock apart.
Chemical erosion can break rocks apart.
Formation of stalactites is an example of chemical erosion.
Weathering and erosion can create soil.

Answers

Hello there, trinitibush!!

See, the formation of stalactites is not an example of erosion. Stalactites are an example of mineral deposits. Therefore, statement #3 must be false.

I really hope this helps you out!! :)

statement 3 is false

List the 4 types of plant tropisms and give 1-2 examples of each type. Be sure to explain why each tropism helps the plant survive.

Answers

The answer is your a noob

5. What variables could you change in the virtual lab that would allow you to evaluate the
strength of your solutions and any proposed emergency response plans?

Answers

S-P wave interval is the variable which could help evaluate strength of solutions and proposed emergency response plans.

What is S-P wave interval?

This is referred to the difference in time between the first arrival of the P-wave and the S-wave.

In a virtual lab, it is the distance of the station from the emergency unit which helps evaluate the effectiveness.

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Which wave has the higher frequency A or B?

Answers

Answer:

wave b has the higher frequency

Answer:

b wave has the higher frequency

Once nutrients have been broken down through the process of cellular respiration, which of the following must also happen in order for an animal cell to maintain homeostasis?

A. The cell must take in sunlight.

B. The cell must remove wastes.

C. The cell must use up the energy molecules.

D. The cell must lower its operating temperature.

Answers

Answer:

A.

Explanation:

the answer is A! the cell must take in sunlight to maintain homeostasis

Ill give Brainlist!!!!!

Answers

The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.

Which factor is different between the tundra biome and a tundra ecosystem?
A. Soil moisture
B. Climate
C. Size
D. Type of plants

Answers

Answer:

its A. Soil Moisture

Explanation:

I thinks it’s C: Size correct me if I’m wrong

How did the underwater volcano form?

Answers

Answer:

Underwater volcanoes form much like volcanoes on dry land by a process known as subduction.

Explanation:

This occurs as a result of tectonic plates which form the top layer of the Earth's mantle, just below the Earth's crust. They support the weight of the continents and the combined water of the seas.

Answer:

so ... underwater volcanoes form much like volcanoes on dry land, by a process known as subduction. This occurs as a result of the tectonic plates which form the top layer of the earth's mantle, just below the earth's crust. They support the weight of the continents and the combined water of the seas.

Explanation:

What parts of the Earth were involved?

Answers

Answer:

were involved in the like outside of the crust which is the land inbetween the atmosphere

Explanation:

How does the magma in underwater volcanoes in Hawaii form?

Answers

Answer:ike a blowtorch, the heat transforms deep rocks into oozy magma

Explanation:

Answer:

Like a blowtorch, the heat transforms deep rocks into oozy magma. The magma rises upward until it erupts onto the seafloor. When the sizzling lava (which is what magma is called when it erupts) hits the cooler water, it hardens into an underwater volcano, the heat transforms deep rocks into oozy magma

Explanation:

Which of these types of environments is MOST LIKELY to experience the arrival of pioneer species?
A .an old growth forest
B. an undisturbed prairie
C. an established mountain lake
D. a newly formed volcanic island

Answers

Answer:

hey! the answer is D. ((A newly formed volcanic island)))

The type of environments is most likely to experience the arrival of pioneer species is a newly formed volcanic island. Thus, option D is correct.

What is environmental change?

Environmental change has a change or the disturbance of the climate which has been most often causes due to the human behavior,  human activity or the natural ecological processes.

Environmental change has been consists many factors, such as the natural disaster, human interferences, or animal interactions. It has been also included physical change. Environmental change can also refers to the long-term shift in the temperature and weather patterns. These shifts may be the natural, such as through variations in the solar system.

In environmental change natural systems transform the sun's energy into living matter and cause changes by cycling material through geological, biological, oceanic and atmospheric processes. So environmental change has serious issue to our human society.

Therefore, The type of environments is most likely to experience the arrival of pioneer species is a newly formed volcanic island. Thus, option D is correct.

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How do the different amounts of water that is available around the planet affect the amounts of salt in the world's oceans? ​

Answers

Answer:

MMMMM WE LIKE FREE POINTS

Explanation:

Photosynthesis is: A. A system of living things and their environment. B. The area where something lives.C. The process by which green plants and some other organisms use sunlight to synthesize food from carbon dioxide and water.

Answers

C. The process by which green plants and some other organisms use sunlight to synthesis food from carbon dioxide and water.
c
they use the suns energy and nutrients and distribute carbon dioxide back into the atmosphere

Please help. This test is timed and this course is way too hard. I will mark Brainliest if you have the best answer! No random answers though. Only answer if you actually know the answer. Or else I report you.

Which of these statements best contrasts the dangers of working with cows versus horses?


A. Cows are more territorial than horses, but horses are more protective.

B. Cows tend to react as a herd, but horses react more quickly to danger.

C. Horses are more naturally aggressive than cows, but cows weigh more.

D. Horses spook or startle quicker than cows do, but cows are more combative.

Answers

Answer: The answer is B

Explanation: Cows will react in a herd mentality whereas horses are more independent and will react accordingly.

It’s b Bc I took this test before

GIVING BRAINLIEST TO FIRST HELPFUL ANSWER!!

Jan drew a diagram to compare centipedes and millipedes.
Which belongs in the area labeled Y?
are active predators
have two pairs of legs on each segment
use specialized mouthparts to attach to hosts
use claws to inject venom

Answers

Answer: have two pairs of legs on each segment

Explanation: Hope this helps : )

Answer:

its B

Explanation:

PLS HELP LIKE ASAP

1.DNA is made of chains of four smaller molecules called: (9 Points)
A. nucleotides
B. mitochondrial bases
C. life blocks
D. DNAblers

2.The four differing nucleotide parts, called bases, are made of a few: (9 Points)
A. Carbon and oxygen atoms
B. Hydrogen atoms
C. Nitrogen and phosphorus atoms
D. All of the above

3.You can think of DNA as a great library of information that exists to do one thing only. What is that thing? (9 Points)

A. Build other double helix models of information.
B. Tell the brain how to construct the body.
C. Store data about what worked and what did not.
D. Direct the building of different protein molecules.

4.It's estimated that all the chromosomes together house about 20,000 individual instructions calledImmersive Reader (9 Points)
A. Genes
B. Base pairs
C. Chromatophores
D. Lipids

Answers

Answer:

a

Explanation:

Answer:a,c,b,d

Explanation:

Give an example of how the environment can affect an organism’s phenotype

Answers

Answer: Environmental conditions, such as temperature and availability of nutrients can affect phenotypes. For example, temperature affects coat color in Siamese cats. ... Height in humans is a complex phenotype influenced by many genes, but it is also influenced by nutrition

Explanation: Hope this helps luv :)

PLS HELP IF U ANSWER ALL THESE QUESTIONS CORRECTLY I WILL GIVE BRAINLYEST

1.A gene carries coded information for the production of a

A. Protein

B. Nucleotide

C. Golgi body

D. Lysosome


2.The entire genome (or, "the book of you") is contained inside the _________ of the cell.


A. Mitochondria


B. Cell wall


C. Nucleus


D. Lysosomes


3.Every cell of every living thing on earth contains all the information it needs to create and duplicate and make variations of:


A. itself


B. any other kind of cell


C. red blood cells


D. proteins

Answers

Answer:

1:A

2:C

3: B

Explanation:

Hello there!

1. A gene carries coded information for the production of a protein. Proteins are the building blocks of cells, so this makes sense!

2. The entire genome is contained within the nucleus of the cell.

3. Every cell of every living thing contains all the information it needs to create and duplicate and make variations of itself.

I hope this helps!!

HELP ASAP!!! (I WILL REPORT YOU IF YOU JOKE AROUND)

Answers

Answer:

The picture

Explanation:

Read the passage. Then write a paragraph that explains why the two ecosystems have such different kinds of plants. Use the terms biotic factor, abiotic factor, and limiting factor in your explanation.

Passage
A group of students is studying the types of plants that grow in a field next to the school. The field is mowed regularly, but it does not get any water other than rainfall. The field has several kinds of plants that are typically found in a grassland ecosystem. But it has none of the plants found in a nearby forest ecosystem.

Answers

Answer:

The reason why the ecosystem has many different kinds of plants is because of the soil, or the environment around them. Also, some biotic factors like animals or humans could be the reason. The humans may have planted seeds there, and probably some abiotic things like soil could also be the reason why. The plants that grow there receive a lot of rain, or the limiting factor is the rain, and the type of plants that grow there don't need much water to survive.

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