In "On the Origin of Species" - what did Darwin say was necessary for change over time?

Answers

Answer 1

Answer:

Natural Selection

Explanation:


Related Questions

What is special about australia’s ""fairy penguin"" species?.

Answers

Answer:

Fairy penguins (Eudyptula minor), also known as little penguins, are tiny, slate-blue animals found along the coastlines of southern Australia and New Zealand. Not only are they more colorful than most aquatic birds, but they're also notably smaller, growing to be less than a foot tall and about 2.5 pounds.

Compare and contrast a fossil with a trace fossil. hlep please 13 points​

Answers

Answer:

see below:

Explanation:

a fossil is usually the animal/insect/whatever, whereas the trace fossil is something like a footprint or excrament! ^.^

Landfill waste results in air pollution as _______. a. garbage decomposes and releases methane b. radon trapped in garbage is released c. paint and hairspray cans break down d. vandals set fire to flammable waste please select the best answer from the choices provided a b c d

Answers

Answer: Your correct answer is indeed A. garbage decomposes and releases methane.

Hope this helps!

Landfill waste results in air pollution as garbage decomposes and releases methane. Hence option A is correct.

What are Landfills?

Landfills are designed to bury and contain waste, but over time, the waste decomposes and produces gases, including methane. Methane is a potent greenhouse gas that contributes to climate change.

It is produced by bacteria that break down organic matter in the waste. As the bacteria consume the organic matter, they release methane and other gases into the air.

To prevent the release of methane and other gases from landfills, modern landfills are designed with systems to capture and control the gases. These systems can include vents and pipes that allow the gases to be collected and either burned off or used to generate electricity.

By capturing and controlling these gases, landfills can reduce their impact on air quality and climate change.

Hence option A, garbage decomposes and releases methane is correct.

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In which of the following cell types would a gene mutation possibly lead to biological resistance in a population?
Cancer cell


Gamete cell


Red blood cell


Somatic cell

Answers

Answer:

cancer cell is correct please

Help asap giving brainliest
Which of the following statements is FALSE?
Most organisms on Earth are multi-celled.
Growing children’s cells are constantly dividing.
Some cells can be shaped like a ball.
The microscopic size of cells enable them to function properly.

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Answer:

This is incorrect, The microscopic size of cells enable them to function properly

When multiple transitional fossils are found in many rock layers, they provide evidence of

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Answer:

evolution

Explanation:

define respiration. ​

Answers

Answer:

Respiration is defined as expelling oxygen

Amanda has a genotype Bb and a phenotype of brown eyes. Her husband, Nick, has a genotype bb and a phenotype of blue eyes. What is the percentage of probability that their children will have brown eyes

Answers

Answer:

The percentage of probability that their children will have brown eyes is 25%.

Explanation:

What idea did colleen cavanaugh discover through her research on deep-sea food webs?.

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Colleen Cavanaugh discovery through her research on deep-sea food webs was the symbiotic role that bacteria play in chemosynthesis.

What is Symbiosis?

This is defined as the relationship between two different biological organisms in an ecosystem.

The symbiotic bacteria found inside the tubeworm uses hydrogen sulfide from the vents as an energy source for themselves and the worms which depicts a symbiotic relationship and was discovered by her.

Read more about Symbiosis here https://brainly.com/question/494031

Neutrons are located in the nucleus of an atom.


True or False

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Answer:

It's false, mate. Neutrons are located in the nucleus which is at the center of the atom.

Explanation:

Does this answer your question??

2. List and describe two characteristics that distinguish primates from other mammals.

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Primates have large brains (relative to body size) compared to other mammals, as well as an increased reliance on visual acuity at the expense of the sense of smell

The two characteristics that distinguish primates from mammals are specialized behavior and unspecialized structure.

Primates are characterized by opposable thumbs, forward-facing eyes, and a low sense of smell. Primates have opposable thumbs because they adapted to tree living. All common ancestors of primates have opposable thumbs.

Primates have larger brains (in proportion to their body weight) than other mammals. They also rely more on visual perception at the cost of olfactory perception (which is the primary sense of smell in most mammals).

These characteristics are more prominent in monkeys, and much less so in Loris and Lemurs.

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what is solid liquid gas

Answers

Answer:

A solid has a definite shape and volume. A liquid has a definite volume, but takes the shape of its container. A gas lacks either a defined shape or volume.

Answer:

Solid, gas and liquid is three of the four fundamental states of matter ( the forth one being plasma)

Explanation:

The molecules in a solid are closely together and contain the least amount of kinetic energy. A solid is characterized by structural rigidity and resistance to a force applied to the surface. Unlike a liquid, a solid object does not flow to take on the shape of its container, nor does it expand to fill the entire available volume like a gas. Liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure, and is the only state with a definite volume but no fixed shape.A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide). A gas mixture, such as air, contains a variety of pure gases. What distinguishes a gas from liquids and solids is the vast separation of the individual gas particles. This separation usually makes a colorless gas invisible to the human observer.

Why is the lion more related to the hamster than the hamster is related to the salamander

Answers

Answer:

The lion and the hamster differ by one trait on the cladogram, carnivore teeth. The hamster and the salamander differ by two traits. These two traits' difference shows that they are separated by a great distance.

Which nitrogenous base correctly pairs with adenine in the dna strand during replication.

Answers

Answer:

Thymine

Explanation:

Closure of the tricuspid valve:____.
I. Would prevent blood from flowing into the pulmonary trunk.
II. Contributes to the first heart sound (lub).
III. Occurs at the beginning of isovolumetric contraction of the ventricle.
IV. Occurs immediately before the left atrium contracts.

Answers

Answer:

The first heart sound (S1) represents closure of the atrioventricular (mitral and tricuspid) valves as the ventricular pressures exceed atrial pressures at the beginning of systole (point a). S1 is normally a single sound because mitral and tricuspid valve closure occurs almost simultaneously.

Explanation:

Which of the following terms is NOT used to refer to white blood cells? A. T Cell B. Phagocyte C. Platelet D. B Cell Please select the best answer from the choices provided. A B C D.

Answers

Answer:

the correct answer is B phagocyte

Explanation:

hope this helps.

Answer:

C

Explanation:

Platelet is something else

What annoys my mom or dad the most?
When is the best time for me to avoid lines at my favorite store?
What is the most popular color among my friends?

Perform your experiment on the topic you chose, and write a detailed account, listing all of your steps (following the scientific method), and all of your findings. Make sure to describe whether or not you were able to accept or reject your original hypothesis.

Answers

Answer:

This has to be from Ur perspective to get a good grade on this assignment so only u can do this

Explanation:

Organic Analysis Discussion

Your day in the Forensic Lab had been fairly routine. Around 1:00pm, an investigator drops off some items of evidence to be analyzed from the scene of a homicide. One is a brown gummy substance found at the crime scene, another is an ink pen and note with writing, and the final is an unknown white powder. With each question, your substantial post should have at minimum 5 to 6 sentences for each question and for each of the different pieces of evidence.

For each item of evidence discuss the following:
1) Which analytical method/equipment would you use?
2) Why would you use this particular method for that piece of evidence?
3) How does that method/equipment work? Give details about how the method works.

PLEASE HELP ME

Answers

Answer:

1) The brown gummy would be going through a Food & Beverage. The ink pen and note would be going through Chromatography. The white powder would be going through Qualitative analysis. 

2) The gummy would be tested for food safety, nutrition, and quality. The ink pen would be tested for separating a mixture of chemical substances into its individual components. The white powder would be tested for a reaction.

3) The method would work for the brown gummy to see why it's brown, how long has it been sitting out, and is there any connection to the case. The method would work for the ink pen and note so it can be thoroughly analyzed to see if it was written in a distressing or frightening matter. The method for white powder would work to determine if it's narcotics or just baking powder. 

Explanation:

Most of the functions of a cell membrane, including transport and enzymatic function, are performed by.

Answers

Whereas the lipid bilayer determines the basic structure of biological membranes, proteins are responsible for most membrane functions, serving as specific receptors, enzymes, transport proteins, and so on. Many membrane proteins extend across the lipid bilayer.

What is a buffer?
A. a strong acid that keeps the pH low
B. a strong base that keeps the pH high
C. a very acidic substance
D. a weak acid or base that keeps the pH from changing

Answers

It’s D

Hope this helps!

PLEASE HURRY!! Mendel decided to use pea plants to study for all EXCEPT which of the following reasons?


A. Pea plants grow slowly and have very few offspring

B. Pea plants reproduce $exually because they have male and female parts.

C. Peas plants have several contrasting characteristics, like height, color, and pea pod shape.

Answers

The answer will be A
because pea plants grow faster and have alot of offsprings also it can reproduce $exually and have several contrasting characteristics, like height, color and pea pod shape!

Mendel gave the principles of inheritance and used pea plants for his experiment. Pea plants grow slowly and have very few offspring is not the reason for choosing them for the experiment. Thus, option A is correct.

What is the use of the pea plant in genetics?

Mendel used the pea plant for experiments of genetics to show the passing of the traits and characters. He used pea plants as they reproduced sexually and had male and female parts.

They also had contrasting characteristics like the color, height and shape of the pea pods, etc. Also, the pea plant reproduced easily with many offsprings.

Therefore, pea plants grow slowly and have very few offspring is not the correct reason.

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Relaying signals from the neuron to other cells is a function of the __________. A. Axon B. Axon terminals C. Myelin sheath D. Cell body Please select the best answer from the choices provided A B C D.

Answers

Answer:

B. Axon terminals

Explanation:

hope this helps

Answer:

b

Explanation:

Which of the following are an example of run off? A rivers, waterfalls, and oceans B rivers, streams, and waterfalls C precipitation, streams, and oceans D Waterfalls,streams, and puddles

Answers

Answer:

D

Explanation:

Im pretty sure its D. I hope it helps!

Name 2 ways that humans can use the products of yeast respiration

Answers

Answer:

1. for preparation of food

2. for medicine

Is is a red eared slider a producer or consumer?

Answers

Answer:

consumer

Explanation:

please follow me

Question

Is is a red eared slider a producer or consumer

꧁༒Answer༒꧂

A consumer

define tricuspid valve​

Answers

Answer:

The function of the tricuspid valve is to prevent backflow of blood from the right ventricle to the right atrium.

Explanation:

The tricuspid valve is located between the right atrium and right ventricle of the heart. It is usually made up of three flaps, called the anterior posterior and septal leaflets. The function of the tricuspid valve is to prevent backflow of blood from the right ventricle to the right atrium.

Hope that helps :)

What is the difference between vitamin d and vitamin d3.

Answers

Answer:

Vitamin d comes from mainly plants, but vitamin d3 comes from animal resources. Vitamin d3 is made when sunlight strikes the skin.

Vitamin D (D2) comes from plant sources, such as wild mushrooms, as well as fortified foods, such as milk or cereal products. Its strength is typically measured in international units, which is abbreviated as “IU” on labeling. The 50,000 IU capsules are prescription only, while lower strengths are available over-the-counter. Vitamin D is less expensive to produce and therefore is the form most commonly found in fortified food products.

Vitamin D3 mainly comes from animal sources such as fish oil, fatty fish, liver, and egg yolks. When your skin is exposed to sunlight, it produces vitamin D3. For this reason, it is sometimes referred to as the sunshine vitamin. Its strength is also measured in international units. All forms of vitamin D3 are available over-the-counter.

I believe that it is B and D but I’m not sure. I understand my work, I just need confirmation.

Commercial crabbero catch so many
blue crabs that the blue crab population decreases.

Which two populations are also likely to decrease as a result?
A. Algae
B. Otter
C. Snail
D. Terrapin

Answers

Answer:

C. Snail

D. Terrapin

Explanation:

PLEASE!! HELP ME!! HURRY!! PLEASE!! I REALLY NEED HELP!! PLEASE!! HELP!!

What are the connections between Photosynthesis and Cellular Respiration?

Answers

Answer:

Photosynthesis makes the glucose that is used in cellular respiration to make ATP.

Extra stuff if you need it: The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

Cellular respiration and photosynthesis are direct opposite reactions. Energy from the sun enters a plant and is converted into glucose during photosynthesis. Some of the energy is used to make ATP in the mitochondria during cellular respiration, and some is lost to the environment as heat.

Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water. While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration. We breathe in that oxygen, which is carried through our blood to all our cells. In our cells, oxygen allows cellular respiration to proceed. Cellular respiration works best in the presence of oxygen. Without oxygen, much less ATP would be produced.

Cellular respiration and photosynthesis are important parts of the carbon cycle. The carbon cycle is the pathways through which carbon is recycled in the biosphere. While cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere. The exchange of carbon dioxide and oxygen during photosynthesis and cellular respiration worldwide helps to keep atmospheric oxygen and carbon dioxide at stable levels.

Hope you do well! Feel free to write this in your own words!

When a firework explodes, stored chemical energy turns into sound and light energy. What other type of energy is also released during this transformation?

Answers

Answer:

Thermal

Explanation:

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