How would Darwin explain the change the length of the giraffes neck ?

Answers

Answer 1

Answer:

There were mutations that led to some longer necks and some shorter necks, as the trees became taller, the short necks died out due to starvation, leaving behind only the longer necked giraffes. Survival of the fittest.


Related Questions

A student observes an amoeba with a light microscope that has a 10x ocular lens and a 120x objective lens. How much larger does the organism appear through the microscope?

Answers

10(120) = 1,200. Therefore, the lens enlarges the organism by 1,200 times through the microscope.

Which body system is responsible for storage in animals?

Answers

Hope it will help you...

Direction of the Earth’s axis changes over time.The Earth wobbles like a top on its axis 26,000 year cycle
A.eccentricity
B.Obliquity
C.Precession
D.None

Answers

Answer:

C. Precession

Explanation:

Axial Precession


Discuss the similiarities between
Bryophytes and
Pteridophyte

Answers

Answer:

Similarities between Bryophytes and Pteridophytes

Ø Both Bryophytes and Pteridophytes are land plants. Ø Both possess distinct Gametophytic and Sporophytic generations. Ø Both groups show heteromorphic alternation of generation. Ø Rhizoids are present in Bryophytes and Pteridophytes

hope it helps you

if yes maark me as brainliest

Similarities

Both bryophytes and pteridophytes prefer to grow in moist and shady habitats.
Both need water for the act of fertilization.
In both bryophytes and pteridophytes sexual reproduction is oogamous type.
Both show heteromorphic alternation of generation.
Both bryophytes and pteridophytes have sporic meiosis.

Phases of meiosis//// ANSWER PLEASE

Answers

Answer: Anaphase I, Anaphase II, Prophase I, Metaphase I, Metaphase II, Telophase I, Prophase II, Telophase II

Explanation:

16. What finally caused scientists to accept the plate tectonic theory?

A) Ocean floor evidence of sea floor spreading.

B) Fossil evidence of supercontinents like Pangaea.

C) Magnetic pole wandering alignment of repositioned plates.

D) Matching glacier scraping patterns on the coasts of different contents.

Answers

Answer:

A)Ocean floor evidence of sea floor spreading.

Explanation:

evidence pointing to the steps or process  of seafloor spreading and effective plate motion This theory was accepted by many scientist because  it depended  on hard evidence and could describe most of the modern geological structures such as ocean basins,

What is the tectonic theory?

The theory of plate tectonics plates  says  that Earth's surface is made of rigid slabs of rock, or plates, that move to each other.

What is a tectonic plate?

They are huge slabs of rock that cover the earths mantle When a earthquake occurs that's because the tectonic plate is breaking  that makes the ground shake  During the earthquake and afterward, the plates keep on shaking until they are stuck again!

Hope this helps!

                                                                                                  -Tobie the dog <3

The plate tectonic theory gave the concept of land and sea formation. "Ocean floor evidence of seafloor spreading" acted as evidence to support the plate theory. Thus, option A is correct.

What is plate tectonic theory?

The plate tectonic theory states about the formation of the lithosphere by the movement of the plate tectonics located deep in the mantle and core layer of the earth. These plates show movement slides over each other to produce lands and drifts to form the oceans.

At a very early there was a supercontinent, Pangaea that slowly shows the formation of the current continent by the movement of the tectonic plates. These solid hard rocks of the earth layers allowed the formation of the various land formations.

The seafloor spreading is the best evidence that supports the tectonic plate theory that described the formation of the oceanic structures including the trenches and basins. The geological structures of the ocean floors supported the theory.

Therefore, option A. evidence of seafloor spreading supported the plate tectonic theory.

Learn more about plate tectonic theory, here:

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Why are nonnative species a threat to biodiversity?

They often use up resources that other organisms need.
They are not able to successfully breed in the wild.
They release pollution into many environments.
They easily contract and spread diseases to other organisms.

Answers

Answer:

A

Explanation:

They often use up resources that other organisms need.

The reason of nonnative species a threat to biodiversity is because of using resources that other organisms need.

Reason why nonnative species a threat to biodiversity:It leads to various kinds of diseases. It acted like predators or parasites. It acted like a competitor or rivalry. It should be hybridizing with local species.

Hence, The reason of nonnative species a threat to biodiversity is because of using resources that other organisms need.

Learn more about biodiversity here: https://brainly.com/question/6503349

I am a rock entering a planet's atmosphere. *

A. Asteroid
B. Star
C. Meteor
D. Comet

Answers

The answer is C. meteor :)

You are standing at 41 degrees North Latitude. Your classmate is at 12 degrees South Latitude. Which one is closer to the Equator?

Answers

Answer:

41 degrees north closer to Equater

Which part of the plant cell provides protection and structural support

Answers

Answer:

cell wall provides protection and structural support

Cell Wall provides the structural support and protection.

Which of the following is a characteristic property of matter that could be used to identify an unknown substance?
1)Mass
2)Density
3)Volume
4)Temperature

Answers

Answer:

4) temperature

Explanation:

How do the nutrients found in plants function in plant DNA? Is the function of plant DNA similar to human DNA?

Answers

Answer:

How do the nutrients found in plants function in plant DNA?

Plants take up essential elements from the soil through their roots and from the air (mainly consisting of nitrogen and oxygen) through their leaves. Nutrient uptake in the soil is achieved by cation exchange, wherein root hairs pump hydrogen ions (H+) into the soil through proton pumps.

Is the function of plant DNA similar to human DNA?

How much DNA do plants share with humans? Over 99%? ALL animals and plants share the same DNA which is basically a code of only 4 'letters' which code for the same amino acids from which all proteins are made.

Explanation:

Plants take up essential elements from the soil through their roots and from the air (mainly consisting of nitrogen and oxygen) through their leaves.

How much DNA do plants share with humans? Over 99%?

ALL animals and plants share the same DNA which is basically a code of only 4 'letters' which code for the same amino acids from which all proteins are made.

Thus, these are the correct answer.

To learn more about DNA click here:

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Tatjana's vision for detail is declining. She once loved doing embroidery, but has switched to sculpting with clay, which is easier on her vision. This is an
example of selective________
with compensation

Optimization

Answers

Answer:

im confused what your asking if your asking but i think its optimization yes

Explanation:

Which of the following are internal cellular conditions?


A) temperature, pH, water concentration, salt concentration


B) sunlight, dry environment, wind

Answers

Answer: a

Explanation:

The following are internal cellular conditions :

A) temperature, pH, water concentration, salt concentration.

Temperature facilitates deciding what can input or depart the cellular and the way properly molecules observed inside the membrane can function. Temperatures that might be too excessive or too low can severely harm and, in the intense temperature ranges, kill the cellular via their impact at the cellular membrane.

Physiologically ordinary intracellular pH is maximum generally among 7.0 and 7.4, even though there may be variability among tissues (e.g., mammalian skeletal muscle has a tendency to have a pHi of 6.8–7.1). There is likewise a pH version throughout special organelles, that can span from round 4.5to 8.0.

Water concentration:

Water molecules flow into and out of the cell at an identical fee, so the length stays constant. then a cell. This method of water attention is better within the cell than outside. Thus, water flows out of them, inflicting them to shrivel or maybe die.

Salt concentration:

Increase of the way of life medium NaCl attention from a hundred and 20 mm to 220 mm ended in a reduced boom fee and a boom in the content material of ribonucleic acid (RNA), protein, and lipide phosphate consistent. Cell quantity becomes likewise increased.

How to maintain internal cellular conditions?

An organism ought to be capable of keeping internal cellular conditions even if the outside surroundings modify. Examples of modifications encompass pH, temperature, salt levels, water levels, and glucose levels.

To know more about internal cellular conditions refer to the link :

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Can you pleaseee help meee​

Answers

Answer:

3.C) Mineral salt

4. B) Potato

It is B potato because potato’s hold charge sorta like lemons

What might a doctor give to someone who is infected with a bacterial disease such as Gonorrhoea?

a.) An Antibiotic
b) Antiviral Medication
c.) An Antiseptic d.)Antifungal Medication​

Answers

Answer:

B: Antibiotics

Explanation:

Antivirals treat viruses, antifungals treat fungi, and OTC treatments are merely symptomatic treatment. Antibiotics typically dissolve the cell wall of bacteria meaning they explode, so they actually kill the bacteria.

A gardener realizes her plant beds do not contain enough organic material. Which of the following choices
would she be most likely to choose to amend her soil?
choices:topsoil,sand,peat,perlite.

Answers

Answer:

Peat

Explanation:

Did the question on edg 2021

Answer:edg

Explanation:

peat ‍

The haploid number is 60, so that means the diploid number is *

A) 60

B) 120

C) 30

D) 15

PLEASE HELP

Answers

Answer:

option B- 120

Explanation:

haploid(n) means a complete set of chromosomes, haploids have half number of chromosomes of a diploid(2n) organism. while diploid means two complete set of chromosomes.

Are horseshoe carbs the oldest knob species of crabs

Answers

Answer:

yes they are

Explanation:

Answer: Yes

Explanation:

Why is it important that the heat capacity, latent heat of fusion and latent heat of vaporization of water are high?

Answers

Answer:

These characteristics of water allows excellent working in the steam engines.

Explanation:

It is very important that the heat capacity, latent heat of fusion and latent heat of vaporization of water are high because due to large heat of vaporization, steam or vapors of water carries a huge amount of thermal energy. This large amount of heat energy is released when the steam condenses due to loss of kinetic energy. This property of water making it an excellent working fluid for heat engines as compared to any other fluid.

Which of the following is NOT involved in photosynthesis or cellular respiration?
a
cytokinins
b
chlorophyll
c
carbon dioxide
d
water

Answers

Answer:

Your answer is cytokinins.

Explanation:

Describe the structure of DNA and how this structure allows DNA to carry out its function. (6 marks)

Answers

Answer:

DNA is someone's identity representing who they are, it helps people function through there daily lives

Explanation:

Do cell membranes contain proteins, but phospholipids and cholesterol

Answers

Answer:

In addition to lipids, membranes are loaded with proteins. In fact, proteins account for roughly half the mass of most cellular membranes. Many of these proteins are embedded into the membrane and stick out on both sides; these are called transmembrane proteins.The cell membrane contains a phospholipid bilayer, but the terms are not interchangeable.In addition to the phospholipids, the plasma membranes of animal cells contain glycolipids and cholesterol. ... Because the interior of the phospholipid bilayer is occupied by

Explanation:

The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate groups that are attached to some of the lipids and proteins.

HELP PLS. ❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗

Symbiotic fungi get their food by ____________.

Question 6 options:

absorbing dead or decaying organisms.


harming the host.


not harming the host, but not helping it.

Answers

The answer is absorbing dead or decaying organisms

what did scientists learn about the common garden study?

Answers

Answer:

The results of this study suggest that discordance in divergence between morphological characters and molecular genetic markers may represent an opportunity to understand ecological mechanisms of incipient specialization.

Explanation:

A boundary formed when two plates move past each other.
A. Ocean Ocean basinbasinB.
B. Divergent Divergent boundary
C. Transform Transform boundary
D. Convergent Convergent boundary

Answers

Answer:

it would be C. transform fault boundary

Explanation:

It’s C

Well when two plates slide past one another than this process is known as Transform Plate Boundary, due to this phenomena fissures and cracks are formed inside the crust through which magma rises onto the surface and canyons are also formed due to this process.


Please help!!!!

Can someone please give a small description on these words based off of plant cells

Cell wall
Golgi apparatus
Chloroplast
Cell membrane
Intermediate filaments
Ribosome

Answers

Answer:

Cell wall: A protective layer covering the outside of the cell. They keep the shape of the plant cell, prevent water loss, and provide support.

golgi apparatus: Transports proteins and lipids around the cell. Often it is called the shipping department of the cell.

chloroplast: Chloroplasts store chlorophyll and this is where photosynthesis takes place in the cell.

Cell membrane: A layer that covers the cell, acts as a gate and determines what comes and goes through the cell. It allows good things in, while keeping others out.

Intermediate filaments: Provides support when when the plant cell comes into contact with other cells.

Ribosome: The part of the cell that is responsible for creating proteins.  

Hey,

The cell wall is an extra protective layer around the plasma membrane, and allows for plant protection from bacteria, water etc. The Golgi apparatus is an organelle within plant cells that modifies, packages, and transports proteins and lipids throughout the cell. Chloroplasts are organelles within plant cells that are responsible for photosynthesis. They contain thylakoids and the stroma. The cell membrane (aka plasma membrane) is made up mainly of phospholipids. It is selectively permeable, meaning it only allows certain substances to pass, usually small, non-polar particles. Ribosomes are the sites of protein synthesis, or where proteins are built. Hope that helps!

Please answer i am not having any motivation im very tired please answer giving brainliest look at photo and answer.

Answers

because the grand canyon was formed in the ocean and the ocean was filled with organisms

which of these are is a benefit of GMO's

Answers

Which of what? There’s no options
Please update your question because there is nothing there :/

A DNA nucleotide is composed of

Answers

Phosphate, sugar (deoxyribose) and a base (A, T, G or C)
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