Rather than flight, what do scientists think feathers initially evolved for?

Answers

Answer 1

Answer:

Many Bird ancestors like dinosaurs originally had these feathers even tho they didn't fly. Bird feathers have originally been thought to be used for mate attraction or even insulation. Modern birds have many different types of feathers!

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Related Questions

Gaseous exchange is best described as?

Answers

Answer:

The exchange of oxygen and carbon dioxide between the alveoli and bloodstream (via passive diffusion)

Explanation:

;)

Answer: The exchange of oxygen and carbon dioxide between the alveoli and bloodstream

Explanation:

I hope this helps

HELP PLEASEEEEEEEEEEEEE

Answers

Answer:

steroids: catabolic

cellular respiration: catabolic

lipid breakdown: catabolic

photosynthesis: anabolic

Explanation:

Catabolic you could say is when something breaks down, "consumed, used". When its anabolic its being formed, example: photosynthesis to create energy.

Hope that helps

Select all that apply. Hair infections are generally
caused by
bacteria.
fungi.
viruses.
ODO
cancer.
lice.
DONE

Answers

Answer: A. Bacteria, B. Fungi, E. Lice.

Explanation:

cellular respiration
.
help with chart

Answers

The arrows mean that it belongs in that box and in the box where the caption is in.

Meaning that you should write the same answer in both boxes.

Ian experience pain in his leg after a fall he goes to the doctor after an exam the doctor explain to Ian that he has
injured a piece of tissue that connects his leg muscle to bone. What piece of tissue is the doctor describing?
cartilage
joint

Answers

Answer:

Tendon

Explanation:

It’s not cartilage because cartilage is connective tissue in between joints, and a joint is a place between bones that allows movement. Tendons connect muscles to bones.

Explain five possible setbacks a company could face if they don't develop effective configuration management policies and processes.

Answers

Possible setbacks are the difficulty in keeping up with market changes, failures in product production, failures in product distribution, sector problems, problems in the management of employees.

We can arrive at this answer because:

The management of a company is essential for its proper functioning and the success of the production.One of the first problems that lack of management causes is the difficulty in keeping up with market changes. This makes the company outdated and inefficient.Talking about the production and distribution of the product harms sales and reduces the number of customers.Sectoral problems hinder organized production, which will also affect sales.Problems in managing employees will also be disadvantageous, as it will affect all of the company's compositional factors.

Therefore, we can say that management is the most important point to be organized.

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Define the term variation as it relates to living organisms.

Answers

In biology, variation refers to any difference between cells, individuals, or groups of organisms of any species caused by genetic differences (genotypic variation) or the effect of environmental conditions on the manifestation of genetic potentials (phenotypic variation).

Tastes associated with caffeine, quinine, or aspirin are detected primarily by ________ taste receptors.

Answers

Tastes associated with caffeine, quinine, or aspirin are detected primarily

by bitter taste receptors.

These receptors can either be TAS2Rs or T2Rs  and they help to protect

against harmful food substances. They are also responsible in the

stimulation of hormones which increases hunger.

Bitter taste receptors are found in the oral cavity and stomach and it is the

receptor which bind to more than fifty percent of all the drugs  

manufactured.

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please help :(
Which of the following defines a cash crop?


any crop grown to be sold for direct sale

any crop grown to be sold to other growers

any crop grown to be sold as a raw material

any crop grown to be sold on the commodities market

Answers

Answer:

Any crop grown to be sold for Direct sale

A cash crop or profit crop is an agricultural crop which is grown to sell for profit. ... The term is used to differentiate marketed crops from subsistence crops, which are those fed to the producer's own livestock or grown as food for the producer's family.

Hope this helps you!!

What happens to nutrient macromolecules in an animal's digestive tract?
A) The digestive breakdown of macromolecules determines the monomers that are
immediately needed and therefore produced.
B) Proteins and nucleic acids are digested into monomers before absorption; energy-storage
macromolecules (starch and fat) are absorbed whole.
C) They are absorbed whole and are then broken down into monomers within cells that
ultimately use them.
D) Nutrient macromolecules are digested into monomers before absorptio
3.33 Points

Answers

Answer:

D

Explanation:

Nutrient macromolecules are digested into monomers before absorption. a tube-shaped compartment for the transport, digestion, and absorption of food.

How do bogs keep themselves cool

Answers

Answer: Like humans, dogs need to keep themselves cool to protect their bodies. They do sweat, but not in the same way. They only have sweat glands only on the paw pads and nose leather. Since they are covered with fur, it is more challenging to keep their bodies cool.

After your dog runs around, you will notice that he begins to pant heavily. Dogs rely on panting to keep their bodies cool. Panting causes the evaporation of water from the nasal cavity, tongue, throat and lungs, which helps lower their body temperature.

They also experience the same dilation in blood vessels as humans, which brings blood to the surface of the skin, allowing the air in the environment to cool them.

Any dog is at risk for heat-related problems, especially in warm, humid weather. Our brachycephalic friends are at a much greater risk than their long-nosed counterparts. Large breeds with thick coats, such as Bernese Mountain dogs or Pyrenees are also more prone. Dogs with pre-existing heart conditions or respiratory issues are also more likely to be overcome by the heat.

When these dogs pant to try and cool themselves, they have to work harder to do so. This only raises their body temperature even higher, making it worse instead of better.

The vestibulocerebellum helps regulate _________; the spinocerebellum helps regulate _________ and the cerebrocerebellum helps regulate __________.

Answers

The vestibulocerebellum helps regulate balance and eye movement. Moreover, the spinocerebellum helps regulate body and limb movement and the cerebrocerebellum helps regulate in planning movements.

The vestibulocerebellum is a region of the cerebellum which involved in balance and body position in space.

The spinocerebellum is involved in controlling lateral descending systems in order to regulate distal limb muscles.

The cerebrocerebellum is involved in motor planning by connecting the motor and premotor cortices.

Learn more about the cerebellum here:

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What are 3 inventions that came as a direct result of space exploration?

Answers

Answer:

NASA has addressed a lot of issues in space exploration through their inventions such as water filters, charge-coupled devices, lifeshears, scratch-resistant eyeglass lenses, cochlear implants, anti-corrosion coating and memory foam.

Explanation:

Which weevil is closely related to the oak weevil

Answers

Your chair 90000 nappy

1. What do we call the study of the earth and its structure?

Answers

Geology !

Explanation: (if needed)

The studies of Earth’s physical structure and substance, its history and the processes that act on it. People who work in this field are known as geologists. Planetary geology is the science of studying the same things about other planets. It includes the study of organisms that have inhabited our planet. An important part of geology is the study of how Earth's materials, structures, processes, and organisms have changed over time. Geology involves methods and knowledge from biology, chemistry, physics, and mathematics.

Answer:

This study is called geology

Explanation:

Geology is a branch of Earth science concerned with both the liquid and solid Earth, the rocks of which it is composed, and the processes by which they change over time. Geology can also include the study of the solid features of any terrestrial planet or natural satellite such as Mars or the Moon.

PLEASE HELP I LITERALLY BEG!!!!!!
What’s the difference between transformed and untransformed bacteria

Answers

Answer:

DNA is accidentally moved from one bacterium to another by a virus

Explanation:In transformation, a bacterium takes up a piece of DNA floating in its environment. In transduction, DNA is accidentally moved from one bacterium to another by a virus. In conjugation, DNA is transferred between bacteria through a tube between cells.

PLEASE HELP ME WILL MARK BRAINLIEST LIKE GIVE ME THE REAL ANSWER
Which of the following distinguishes how options differ from futures In commodities markets?


Options are used to speculate against good pricing.


Options cannot be applied beyond a set volume of a good.


Options involve prices for goods set at the current time.


Options do not involve a requirement for a good to be purchased.

Answers

Answer:

I believe it is C I am not 100% though sorry if its wrong

Options and futures contracts are both derivatives, created mostly for hedging purposes. The key difference between them is that futures obligate each party to buy or sell, while options give the holder the right (not the obligation) to buy or sell.

16. Use the graph to answer the questions.
a. What is the slope of the line?
b. What does it mean in the context of this graph?

Answers

Answer:

a) 1/2

b) It is gradually rising

Explanation:

a) To find the slope you do rise/run from the points given and in this case you go up one and over 2, therefore 1/2

GIVING BRAINLY
Which characteristic do animals with an endoskeleton have that animals with
an exoskeleton lack?
A. A skeleton outside their body
B. A skeleton inside their body
C. The ability to get heat from the environment
D. The ability to produce most of the heat they need

Answers

Answer:

A.

Explanation:

Cause endo skeleton is on the inside

The answer is B because endoskeletons are external bones

How does myelin increase the speed of the action potential?

Answers

It insulates the axon and assembles specialized molecular structure at the nodes of Ranvier. In unmyelinated axons, the action potential travels continuously along the axons.

For example, in unmyelinated C fibers that conduct pain or temperature (0.4–1.2 μm in diameter), conduction velocity along the axon is 0.5–2.0 m/s (as fast as you walk or jog).

I hope this helps have a great day :)

Which types of organisms developed first due to the early
environmental conditions on Earth?
A. prokaryotic and aerobic
B. prokaryotic and anaerobic
C. eukaryotic and aerobic
D. eukaryotic and anaerobic

Answers

The answer is prokaryotic and anaerobic

What happens during a penumbral lunar eclipse?

Answers

Answer: A penumbral lunar eclipse occurs when the Sun, Earth, and the Moon are imperfectly aligned.

Explanation: During this occurance the Earth comes between the Sun and moon and blocks the sunlight from falling on the moon.

A terrestrial biome has long, cold winters and short, cool summers. The precipitation is low, and the ground remains frozen for most of the year. Plants such as lichens and mosses that can withstand dry and cold conditions are found in this biome.

Which biome is characterized by these factors?


coniferous forest
savannah
tropical rainforest
tundra

ANSWER: tundra

Answers

Tundra biome is the terrestrial biome which is characterized by long, cold

winters and short, cool summers.

The tundra biome is found in the polar desert regions where there are long

periods of winter. There is very little precipitation which is usually in the

form of snow.

This biome contains less nutrients and doesn't support much plant or animal

life. Plants such as lichens and mosses which are able to withstand dry and

cold conditions are found in this biome.

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How do i write a good hypothesis

Answers

Answer:

use "if...then...because"

Explanation:

a good way to write a hypothesis is using "if, then, because" statements because it fully explains your idea. you also need to make sure that your hypothesis is testable and realistic.

example/

Jimothy is testing if jazz music effects bee honey production. he writes this statement:

If jazz is played near a bee hive while producing honey, then the bees will produce more honey because the smooth music will raise their dopamine levels so that they become happier and therefore faster and more productive.

Answer:

I will write some tips in my explanation!

Explanation:

After formulating wh questions, it's time to form a hypothesis or an educated guess, but how do we do this?

First, you must gather the knowledge you already know; ad back it up with something that has happened like a study, article, etc

Example: It is a known fact that distilled water does not contain impurities, in fact, many distilled water companies boast about their water being clean and safe.

This will be the base of your hypothesis, and from here, just add the knowledge of which you know that can make up a well supported hypothesis, which you will then test.

Example:

It is a known fact that distilled water does not contain impurities, in fact, many distilled water companies boast about their water being clean and safe. Because distilled water is free of impurities, we can say that it cannot conduct electricity, but if we add salt to distilled water, the water will then be able to conduct electricity because...

That's my tips! If you are satisfied, please give a thanks or rate it! :D have a nice day

A soil sample is 25 percent sand, 55 percent clay, and 20 percent silt. Use the following soil texture triangle to determine the type of soil present in this sample.

Clay
Silty loam
Sandy clay
Sandy clay loam

Answers

Answer:

Clay

Explanation:

Answer:

a: sample containing 30 percent sand, 35 percent clay, and 35 percent silt

Explanation:

help with number 12 please

Answers

Answer:

i don't know lol i can't really se it becise is like i don't know

PLEASE HELP WITH THIS ONE QUESTION
What statement about the inheritance of mitochondrial DNA is true?

A) The sperm cell donates most of the material in the cytoplasm to the zygote, including mitochondrial DNA.

B) The egg and sperm cells contribute equal amounts of mitochondrial DNA to the zygote.

C) The egg cell donates most of the material in the cytoplasm to the zygote, including mitochondrial DNA.

D) The sperm cell donates most of the DNA in the nucleus to the zygote, including mitochondrial DNA.

Answers

Answer:

The answer should be C

Explanation:

The egg contributes all the cytoplasm and organelles to the zygote. The sperm only contributes one set of chromosomes.

The typical sperm midpiece contains approximately 50-75 mitochondria with one copy of mtDNA in each. This represents an 8- to 10-fold decline in copy number during spermiogenesis.

Why is it important to know where the San Andreas fault is

Answers

Answer:

so you dont die

Explanation:

Its a important part on knowing earthquakes and how they are caused.

Need help with this biology pedigree question.

Answers

Check the comment under this

The graph below shows the number of viable bald eagle nests along a
25-mile long section of the Mississippi River between Wisconsin and
Minnesota. IF EACH BALD EAGLE NEST ACCOUNTED FOR A BREEDING
PAIR, what is the probable carrying capacity of this environment? *

Answers

The carrying capacity of this environment is 225 from the graph shown.

An ecosystem is a self supporting unit in which materials and energy are exchanged. The carrying capacity of an ecosystem refers to the maximum number of species that the ecosystem can effectively sustain without breaking down.

From the graph, we can see that the population of species continues to increase until the number reaches 225. This is the carrying capacity of this environment.

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