Over hunting of a species by humans can cause evolution to occur due to option E: bottle neck effect.
What is the bottleneck effect in regards to biology?The bottleneck effect is known to be a term that describes how a population's size is first decreased as well as then increased and how this changes how genetic variation is distributed among its members.
Note that When a population is drastically reduced in number, genetic drift is said to manifests itself most dramatically in a phenomenon known as the bottleneck effect.
Hence, Natural disasters (earthquakes, floods, as well as fires) can completely devastate a population, killing the majority of species and leaving only a few, haphazard survivors in their wake.
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A single entity has been discovered that shows many of the characteristics of living things including growth, organization, and the ability to maintain homeostasis. However, because it does not reproduce, it is not considered a living thing.
True or false
Answer: False
Explanation: Reproduction can not be considered as a describing factor of living organisms.
for example: mule is a hybrid of female horse and male donkey which is a sterile animal
similarly in case of human beings there are several couples who can not have babies but they are living organisms.
Hence, Reproduction can not be counted as a defining property of living beings
What has become the biggest
threat to biodiversity?
A. limited resources
C. habitat loss
B. extinction
D. pollution
Answer:
Extinction has become the biggest threat to biodiversity
A habitat is ___________________.
A habitat is a natural environment where organism lives,
What is a habitat?
Habitat in simple terms is where an organism lives due to to the suitability for it to survive in that particular place. Therefore, habitat can be be classified into types, the aquatic habitat, the terrestrial habitat and the arboreal habitat.
The types of habitat are:
Aquatic habitat: are places like lakes, rivers, ponds, oceans, where where water is present and it provides shelter, food and oxygen for organisms to survive and reproduce.Terrestrial habitat: are cover by land surface. This type of habitat can be forests. deserts, mountains and grasslands.Arboreal habitat: this is home for animals that live and survive in trees.In summary, a habitat is a natural place where an organism is found, where it lives and where it thrives.
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1.this part of the brain controls the beating of the heart
a.spinal cord b.cerebrum c.cerebellum d.main stem
2. tiny connections or pathways in the nervous system are called ___
a.blood cells b. neurons c.brain tissues d.tiny cells sites
3. sounds enter the ear as ___
a.vibrations b.loud c.reactions d. all of these
please help me answer this questions it’s due tomorrow 7am….
3. D
Explanation:
nice
Answer:
1(the answer is the brain stem)
2(the answer is the neurons)
3(the answer is the vibrations)
The bicoid gene product is normally localized to the anterior end of the embryo. If large amounts of the product were injected into the posterior end as well, which of the following would occur?
Anterior structures would form in both sides of the embryo.
The embryo would grow to an unusually large size.
The embryo would probably show no anterior development and die.
The embryo would grow extra wings and legs.
If large amounts of the product were injected into the posterior end as well, the option that would occur is option A: Anterior structures would form in both sides of the embryo.
What happens to an embryo with a mutated bicoid gene?The Head and thorax are said to be absent from female embryos with a bicoid mutation, and they are known to have been replaced by a posterior telson as stated by Fröhnhofer in 1986.
Noe that At the blastoderm stage, ems and btd expression are reduced and shifted anteriorly in embryos missing both maternal and zygotic HB.
Since it allowed animals to move unidirectionally, the anterior-posterior (AP) axis was the first embryonic axis to emerge in evolutionary time.
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question is in the image provided
Answer: The correct answer is B. ADP + P --> ATP
Explanation: ADP is combined with a phosphate to form ATP in the reaction ADP+Pi+free energy→ATP+H2O.
Regular exercise reduces the risk for cardiovascular diseases by
Group of answer choices
thinning the blood.
increasing flexibility.
decreasing lung capacity.
strengthening the heart muscle.
Regular exercise reduces the risk of cardiovascular diseases by strengthening the heart muscles. So the correct option is D.
What are the benefits of regular exercise?One of the most crucial things you can do for your health is to exercise regularly. Physical activity may strengthen your bones and muscles, help you maintain a healthy weight, increase your ability to carry out daily tasks and improve your cognitive health.
Adults who spend less time sitting and engage in any level of moderate-to-vigorous exercise reap some health advantages. Physical activity has a greater influence on your health than very few other lifestyle decisions.
Physical activity has health advantages for everyone; age, ability, ethnicity, form, or size are irrelevant. Following a session of moderate-to-vigorous exercise, physical activity has some positive effects on brain health. Children aged 6 to 13 will experience better thinking or cognition and adults will have less transient anxiety.
As you age, staying physically active on a regular basis might help keep your thinking, learning, and judgment abilities sharp. Additionally, it can improve your quality of sleep and lower your risk of anxiety and sadness.
Therefore the correct option is D.
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I need help please!!
1According to the periodic table, the statement that correctly describes the change from a neutral atom of an element to its ion is: a phosphorus atom forms a P ion by gaining three electrons; option D
Ions are substances that are formed when neural atoms lose or gain electrons.
There are two types of ions:
cation - these are positively charged ionsanions - these are negatively charged ionsCations are formed by the loss of electrons. Metal atoms form cations by a loss of electrons.
For example; Mg ---> Mg²⁺ + 2 e⁻
Anions are formed by a gain of electrons. Non- metals form anions by a gain of electrons.
For exmaple: Cl₂ + 2 e⁻ ---> 2 Cl⁻
Therefore, ions are formed when atoms gain or lose electrons.
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What is the process of weighing the pros and cons of different alternatives and making a choice?
A.
problem solving
B.
analogical reasoning
C.
decision making
D.
mental simulations
The process of weighing the pros and cons of different alternatives and making a choice is decision-making. Option C.
Decision-making is the process of making decisions by identifying decisions, gathering information, and evaluating alternative solutions. A step-by-step decision-making process helps you make more conscious and thoughtful decisions by organizing relevant information and defining alternatives.
Quantification options help you review your decisions. Record the potential benefits of your approach in the Pros column and potential negative outcomes in the Cons column. Then evaluate the strengths and weaknesses to show the importance of each. Considering the worst-case scenarios and possible issues with each decision is a good way to understand the strengths and weaknesses of different decisions.
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The smooth ER differs from the rough ER in that:
A. The rough ER contains no ribosomes, the smooth ER contains ribosomes.
B. The smooth ER produces carbohydrates and lipids, rough ER produces proteins.
C. The smooth ER produces proteins, rough ER produces lipids.
D. The rough ER is the site of mRNA transcription, smooth ER is the site of protein translation.
Answer:
B
Explanation:
the correct answer is B. Smooth ER are found in cells that participate in liptid metabolism and detoxify the body and rough ER is involved in protein production
How old is Earth and when did the oxygen revolution occur?
1.Photosynthesis and cellular respiration are often described in two ways: (1) they are chemically opposite; and (2) they have a relationship to each other. Explain what these two statements mean. Be sure to include the specific substances used and released by each process.Answer:I need help writing a simple and original answer.
They are chemically opposite, since one (photosynthesis) implies an anabolic metabolism. It produces sugar, from atmospheric CO2. While respiration is a catabolic process, it takes this sugar and oxidizes until it creates CO2, ¡the very essential ingredient photosynthsis needs! So, to sum up, while photosynthesis creates sugar, respiration consumes it. This has a deeper physiological meaning, because both process happen at the same time, they could be view as a worldwide ecosystemical gas atmospheric regulation. Some organisms produce sugar and release Oxygen (photosynthesis products), while others consume sugar and release CO2 (non photosynthetic organisms). Note that plants, are also capable of repiration (that is, C02 release) but this occurs at lesser extent than in animals.
Q1. In a sound wave what is a region of high pressure known as?
Q2.Name a wave that does not need a material to travel
Q3.Why does sound travel faster in solids as compared to liquids and faster in liquid as compared to gases?
Answer:
1. In a sound wave what is a region of high pressure known as?
These regions are known as compressions and rarefactions respectively. The compressions are regions of high air pressure while the rarefactions are regions of low air pressure.
2. Name a wave that does not need a material to travel
An electromagnetic wave can travel through anything - be it air, a solid material or vacuum. It does not need a medium to propagate or travel from one place to another.
3. Why does sound travel faster in solids as compared to liquids and faster in liquid as compared to gases?
This is because the molecules of solids are more tightly packed together than in liquids and those in liquids are more tightly packed than in gases. Vibrating effects are more easily passed on from one molecule to the next when they are in close proximity.
Explanation:
Hope it helps! =D
name three important factors that can effect the rate of photosynthesis
Answer:
light intensity, carbon dioxide concentration and temperature.
Explanation:
A boxer has been jumping rope for an hour. His leg muscles are burning and
he feels weak. Which substance is the most likely cause of the burning he
feels in his muscles?
Waste products from anaerobic respiration substance is the most likely cause of the burning he feels in his muscles.
What is the muscle function?Its ability to contract is their key principle. Movement is caused by muscles that are connected with blood vessels, internal organs, or bones. Less body fat, a better immune system, more energy, less stress, and almost all bodily activity is indeed the consequence of muscle contraction.
Which body parts are muscles?An organ of the postural muscles is a whole muscle tissue. Skeletal muscle tissue, connective, nerve tissue, and blood or vascular tissue make up each organ or muscle. Size, form, and fibre arrangement in skeletal muscles vary widely.
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The element which forms the backbone of all organic molecules is: PLEASE HELPPPP
Answer: Organic chemistry based on compounds in which (Carbon) is a central element. The properties of carbon make it the backbone of the organic molecules which form
Explanation: The fundamental component for all of these macromolecules is carbon. The carbon atom has unique properties that allow it to form covalent bonds to as many as four different atoms, making this versatile element ideal to serve as the basic structural component, or “backbone,” of the macromolecules.
Answer: Carbon
Explanation:
Denise was measuring the effect of temperature on the amount of dissolved oxygen that water can hold. She hypothesized that as water temperature increases, the amount of oxygen that is dissolved in water increases. Her data are shown in the table below.
The conclusion that Denise is most likely to write in her lab report is as follows: the data did not support the hypothesis because the amount of dissolved oxygen decreased as water temperature increased (option A).
What is a hypothesis?Hypothesis in an investigation is the tentative conjecture explaining an observation, phenomenon or scientific problem that can be tested by further observation, investigation and/or experimentation.
According to this question, Denise was performing an experiment on the effect of temperature has on the amount of dissolved oxygen that water can hold.
She then constructs an hypothesis as follows: "water temperature increases, the amount of oxygen that is dissolved in water increases"
However, the data given in the results showed that as temperature increases, the amount of dissolved oxygen decreases. Therefore, it can be said that Denise's data did not support her hypothesis.
The complete question is as follows:
Which conclusion did Denise most likely write in her lab report?
The data did not support the hypothesis because the amount of dissolved oxygen decreased as water temperature increased
The data did not support the hypothesis because the amount of dissolved oxygen increased as water temperature increased
The data supported the hypothesis because the amount of dissolved oxygen decreased as water temperature increased
The data supported the hypothesis because the amount of dissolved oxygen increased as water temperature decreased
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Why do we eat fruit??
Answer:
It is yummy, tasty and healthy~
Explanation:
How do the muscular and skeletal systems work together to make the human body move? A. They provide nutrients to the body B. They provide oxygen and carbon dioxide to the body C. The provide blood to the body D. They provide structure and movement to the body
The muscular and skeletal systems work together to make the human body move as: D. They provide structure and movement to the body.
The muscular and skeletal system is also known as the musculoskeletal system. The bones of our skeletal system work on protecting the body's organs, support the weight of our body and provides shape to our body. The muscles of the muscular system which are attached to these bones, pull on them to allow the movement of the body.
The muscles in our body can pull the bones, but they can't push them back to their original position. Therefore, they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint. After the movement is complete, the flexor relaxes and the extensor contracts to straighten the limb at the same joint.
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Calculate the population growth for the following scenario. Over the course of a year, a population of 25 penguins gained 5 penguins through births and lost 3 penguins to death. In addition, 10 adult penguins moved into the population through immigration and 6 adult penguins moved out of the population through emigration. What is the yearly growth rate of this population?
Yearly growth rate is 6.
Population increases by Birth and immigration. Population decreases by death and emigrations .so, yearly growth rate of this population from births and immigration provides the growth rate of a population over a given period of time.
Birth immigration 5+10,6+3
Yearly growth rate is 15-9=6
Population growth is the increase in the number of people in a population or dispersed group. To calculate the Population Growth (PG) we find the difference (subtract) between the initial population and the population at Time 1, then divide by the initial population and multiply by 100.
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pls help i dont get it
Smithers thinks that a special juice will increase the productivity of two groups of
50 workers. He creates two groups of 50 workers each and assigns each group
the same task (in this case, they're supposed to staple a set of papers). Group A is
given the special juice to drink while they work. Group B is not given the special
juice. After an hour, Smithers counts how many stacks of papers each group has
made. Group A made 1,587 stacks, Group B made 2,113 stacks.
Use this scenario to answer questions 1-4
1. Identify the control group
A: Group A
B: Group B
C: There is no control group
2. Identify the independent variable
a: Amount of pages stapled
b: Special Juice
c: Stapler
3. Identify the dependent variable*
a: Special Juice
b: Stapler
c: Amount of pages stapled
4. What should Smithers conclusion be?
a: Group A made 1,587 stacks and Group B made 2,113 stacks of paper therefore the special drink DID work
b :There isn't enough evidence to make a conclusion
c: Group A made 1,587 stacks and Group B made 2,113 stacks of paper therefore the special drink DID NOT work
Answer:
bbcc
Explanation:
1.)Group B wasn't given anything to effect their productivity.
2.)The special juice is not effected by other factors.
3.)The amount of pages stapled is directly affected by the special juice variable
4.)The point of the special juice was to increase productivity, since the group with the special juice was less productive than the group without it the special juice failed.
How do O2 levels change during the day?
Your SpO2 may fluctuate during the day, especially when going from a low-energy state to a high-energy state. These variations, your SpO2 remains within a reasonable range, therefore there is no need for alarm.
Why are oxygen levels important?Similar to a person's blood pressure or body temperature, many people believe that an individual's oxygen level is a crucial indicator of how well their body is functioning. According to their doctor's instructions, people with lung or heart conditions can use a pulse oximeter at home to monitor their health.
What happen when oxygen level is low?You may experience headache, disorientation, or restlessness when your blood oxygen level drops below a specific point. Anemia is one of the typical causes of hypoxemia. (Acute respiratory distress syndrome)
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What does the
prefix "bio" mean?
A. study of
B. biotic
C. life
D. grow
Answer:
What does bio- mean? The combining form bio– is used like a prefix meaning “life.” It is often used in scientific terms, especially in biology. The form bio– comes from Greek bíos, meaning “life.” The Latin cognate of bíos is vīta, “life,” which is the source of words such as vital.
Which means of particle transport is shown in the figure below?
Answer
A diffusion
B) osmosis
C) active transport
D facilitated diffusion
Therefore, D, which stands for facilitated diffusion, will be the answer to this issue. Thus, one transport protein carries the molecules from across the membrane during assisted diffusion.
Active transport is affected by what particles?The process that includes the of pumping molecules and ions across membranes in “uphill” direction – against a concentration gradient – is known as active transport.
Transport proteins that are present in the membrane are typically responsible for the active transport of small molecules or ions across a cell membrane.
Do you mean active or passive aided diffusion?Passive transport can be said as a subset of facilitated diffusion.
Because the solution is going down the concentration gradient, assisted diffusion is still passive transport and when it incorporates transport proteins. The cell can easily disperse small nonpolar compounds.
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1) Why does it pay to buy fire insurance for your home even though
you may never have a fire?
Answer:
because what if u had a fire at ur home bro :)
"'Pardon, O King,' cried the little Mouse: 'forgive me this time, I shall never forget it: who knows but what I may be able to do you a turn some of these days?' The Lion was so tickled at the idea of the Mouse being able to help him, that he lifted up his paw and let him go." (paragraph 31)
What does the word tickled suggest about the Lion?
A
He is amused by the Mouse's offer to help him.
B
He is interested in the Mouse's ability to bargain.
C
He is pleased by feeling the Mouse under his paw.
D
He is very happy about the Mouse's request for help.
Answer:
the answer is B
Explanation:
"The lion was so tickled at the idea of the mouse being able to help him " We can see that the lions is amused cuz here it says "at the idea of the mouse being able to help him" so he is actually Abt it
How do we make room when we delete or insert a mutation in our DNA?
In a sequence alignment, we need to use a script when we delete or insert a mutation in our DNA in a nucleotide sequence.
What is a sequence alignment?A sequence alignment is an alignment between the nucleotide sequences of different but evolutionary-related organisms that allow to identify of single nucleotide polymorphisms, deletions and insertions (commonly known as indels). This alignment is denoted with a script for indels.
Therefore, we can conclude that a sequence alignment is denoted with a script of the presence of indels that evidence mutations in the nucleotide sequence between organisms.
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What are your thoughts on psychoneuroimmunology?
Answer:
Psychoneuroimmunology is the study of how your immune system and your central nervous system interact. Psychological stress makes you more susceptible to everything from the common cold to flare-ups of autoimmune diseases.
A cell is a system of parts that work together to carry out basic life processes. An animal is also a system of parts that work together to carry out basic life processes. Match each organ or organ system with the cell part that has a similar function.
Answer:
Nucleus - brain
cell membrane - skeletal system
mitochondria - digestive system
cell wall - skin
Explanation:
hope that helps!
which system is responsible for beathing