Omar paddles a canoe downstream at a rate of 5 mi/hr. The stream is flowing at a rate of 12 mi/hr. What is the actual
velocity of the canoe?
A: 5 mi/hr, downstream
B: 7 mi/hr, downstream
C: 12 mi/hr, downstream
D: 17 mi/hr, downstream
Answer:
The answer would be D: 17 MPH, downstream.
Answer:
The actual velocity of the canoe is 17 mi/hr in downward direction.
Explanation:
It is given that,
Velocity of canoe, [tex]v_c=5\ mi/hr[/tex] (downstream)
Velocity of stream, [tex]v_s=12\ mi/hr[/tex]
We need to find the actual velocity of the canoe. Let it is equal to v. As it is clear that both velocities are in same direction. So, the actual velocity of the canoe is given by the sum of velocity of canoe and the stream.
[tex]v=v_c+v_s[/tex]
[tex]v=5+12[/tex]
v = 17 mi/hr
Since, the velocity is positive. It means it is in downstream direction. So, the correct option is (d) "17 mi/hr, downstream".
A community is all the populations of living organisms in a designated area.
What is an ecosystem?
A.community plus artificial components in an area
B.community plus nonliving components in an area
C.community plus living components in an area
I WILL GIVE YOU BRAINLIEST FOR THE RIGHT ANSWER AND THE BEST EXPLANTION
Answer:
C.community plus living components in an area
Explanation:
An ecosystem is an environment or habitat of organisms and their interaction.
Water makes up a large percentage of the body’s cells. For a cell to remain in homeostasis, there must be a mechanism to control water changes in the cells. The movement of water from an area of high water concentration to an area of low water concentration is
Answer:
The movement of water from an area of high water concentration to an area of low water concentration is called OSMOSIS.
Explanation:
Osmosis is the process by which water molecules moves from a region of high water concentration to the region of low water concentration via a selectively permeable membrane.
In living cells, water moves across boundaries through the process of osmosis, that is cells gain or lose water through osmosis. The direction of movement of water depends on the concentration of the solutes on either side of the selective membrane, water usually moves in the direction of low water concentration and high solute concentration. For instance, for two solute concentrations of 50 M and 70 M, water will move away from 50 M and flow into 70 M
In osmosis, the net movement of water continues until the concentrations on both side of the selective membrane is the same.
Why are new stars likely to form in irregular galaxies? A. They contain large amounts of gas and dust. B. They're part of the Local Group. C. They don't have regular shapes. D. They contain many black holes.
Please help :)
Answer:
A. They contain large amounts of gas and dust.
Explanation:
Having a lot of gas and dust means that these galaxies have a lot of star formation going on within them. This can make them very bright.
Answer:
The correct answer is option A, that is, they contain large amounts of gas and dust.
Explanation:
A galaxy, which does not exhibit a distinguished regular shape, like an elliptical or a spiral galaxy is considered as an irregular galaxy. The irregular galaxies may comprise enormous concentrations of dust and gas.
The stars have the possibility to get formed in the irregular galaxies as they seem to exhibit huge concentrations of gas and dust, which is an essential criterion for the formation of new stars to take place.
Which statement most accurately describes rough ER?
A.
Cytoskeletal filament found in cilia and flagella
B.
Stack of flattened sacs that modify and sort proteins
C.
Series of membrane-enclosed sacs with ribosomes on the surface
D.
Series of membrane-enclosed sacs that detoxify substances and synthesize lipids
The rough endoplasmic reticulum is a series of interconnected membranous sacs with ribosomes on the surface, involved in protein synthesis and the subsequent transport of these proteins to other parts of the cell, such as the Golgi apparatus.
Explanation:Rough endoplasmic reticulum (rough ER) is a cellular organelle consisting of interconnected membranous sacs with a single lipid bilayer. The surface of the rough ER is studded with ribosomes, which are sites of protein synthesis. These proteins can be destined for use within the cell membrane, for secretion outside of the cell, or for use within the cell in various organelles.
Proteins synthesized in the rough ER are often transported to the Golgi apparatus for further modification and sorting. This transportation is facilitated by small sacs called transport vesicles which bud off from the rough ER.
How many chromosomes are in a human gamete?
Answer:
there are 46 chromosomes in a human gamete
Explanation:
When alessandro's cheek is stroked, or the side of his mouth is touched, he turns his head. this is called the?
Answer:
[tex]\\ x^{2} \sqrt{x} \left \{ {{y=2} \atop {x=2}} \right.[/tex]Explanation:
Where is muscle tissue found in the body?
Two common uses for electromagnets are _____.
Hello There!
Two common uses for electromagnets are producing strong magnetic fields and also electrical switches. A magnetic field is an invisible field that exerts magnetic forces on substances.
Electromagnets are commonly used in electric motors and generators for various applications.
Two common uses for electromagnets are:
Electric motors: found in various applications such as refrigerators, cars, and elevators.Generators: used in hydroelectric power production, running lights, and more.These applications demonstrate the diverse and essential roles of electromagnets in our daily lives.
what is the primary function of the nervous system?
Answer:
The primary function of the nervous system is to collect sensory input from the body as well as the external environment and process and interpret the sensory information
Explanation:
The primary function of the nervous system is to receive information about the environment through sensory organs, process it, and generate responses through motor function or changes in physiological state.
Explanation:The primary function of the nervous system is to receive information about the environment through sensory organs, process it, and generate responses through motor function or changes in physiological state. The nervous system is involved in sensations like taste, smell, touch, sight, and hearing, as well as internal stimuli. It also integrates sensory information with memories, emotions, and learning to produce a response.
Learn more about Primary function of the nervous system here:https://brainly.com/question/33821363
#SPJ12
Is a rabbit a herbivore carnivore or omnivore
Hello There!
A rabbit is a herbivore.
A herbivore is an animal that mostly eats plants.
Examples of these types of these types of food would be leaves, flowers, fruit wood and nuts.
Which of the following is a human construct used to help break down the complexity if an ecosystem?
A.trophic levels
B.ecological pyramids
C.the 10% rule
D.the food chain
Answer:
The answer would be (B)
Explanation:
Ecological pyraminds were made to give an easy showcase of how earths ecosystem works.
trophoc levels are a part of the food chain, and the 10% rule is the amount of biomass that is carried up the food chain, all of which are involved inside ecological pyramids.
hope this helps!
Solar evaporation ponds are shallow so that the sun can heat them up causing the water to evaporate which increases the salt concentration. A hybrid of which two bacteria tested in this lab would find life in this habitat ideal
Answer:
Social Respiration
Explanation:
5. The scientific term for chewing food is
a. micturition
b. mightymorphin
c. mastication
d. melatonin
Answer:
c. mastication
Explanation:
The scientific term for chewing food is mastication.
Mastication is the mechanical grinding of food into tiny pieces by the teeth. Mastication is essentially the scientific term for “chewing”
The scientific term for chewing food is mastication.
Option C
Explanation:
The food splits into smaller pieces during mastication. As the food is broken down its surface area increases as the size decreases due to which many other enzymes can also act on the masticated food.
Mixing of enzymes occur both during mastication and after mastication. The food is passed down through oesophagus into the stomach where other enzymes and acids are mixed to breakdown the food into further smaller molecules.
As you read this lesson and type on your computer, you are using the second largest part of your brain called the _____. cerebrum cerebellum hypothalamus brain stem
Answer:cerebellum
Explanation:Cerebrum is the largest, then comes the cerebellum, and then the brain stem. The hypothalamus is also very small.
Answer:
Cerebellum.
Explanation:
The cerebellum is the second largest part of the brain. It a part of hind brain located underneath the occipital lobe of the cerebrum, the largest part of the brain. The cerebellum is divided into two lobes, anterior and posterior. The cerebellum is responsible for controlling movement (motor) and coordination of muscles. Thus, it has ability to control how we do the physical activities such as walking, speaking, and typing on computer.
speed is a vector quantity true or false
Answer:
FALSE
Explanation:
Since there is both magnitude and direction expressed, one would believe that this is likely a displacement
Answer:
False
Explanation:
The average speed is the distance (a scalar quantity) per time ratio. Speed is ignorant of direction. On the other hand, velocity is a vector quantity; it is direction-aware.The average velocity is the displacement or position change (a vector quantity) per time ratio.
which events are likely to be catastrophic to an ecosystem?
select the three correct answers.
A-hurricane.
B-steady population growth.
C-seasonal flooding.
D-introducing of an aggressive invasive species.
E-tsunami.
_____ have reproductive structures known as fruiting bodies
A. Basidiomycetes
B. Ascomycetes
C. Chytridiomycota
D. None of the above
Answer:
B. Ascomycetes
Explanation:
Ascomycetes have reproductive structures known as fruiting bodies.
Answer:
ascomyecets
Explanation:
have reproductive system called fruiting bodies
Most of the nitrogen we lose is lost in/through our
Which of the following happens when a cell divides?Each daughter cell receives its own copy of the parent cell’s DNA.
It becomes more difficult for the cell to get enough oxygen and nutrients.
The cell has DNA overload.
The cell’s volume increases.
What organelle makes protein for use outside the cell?
The rough endoplasmic reticulum (RER) is the organelle responsible for making proteins for use outside the cell. It synthesizes and modifies proteins, which are then packaged and transported to the Golgi apparatus for further processing and secretion.
Explanation:The organelle that makes proteins for use outside the cell is the endoplasmic reticulum (ER). More specifically, it is the rough endoplasmic reticulum (RER), which has ribosomes attached to it. The RER synthesizes and modifies proteins that are then packaged and transported to the Golgi apparatus for further processing and secretion.
Learn more about Organelle that makes protein for use outside the cell here:https://brainly.com/question/29012104
#SPJ5
Conservationists establish that the minimal viable population of a population of tigers in an extensive geographical area is 16. The current population of tigers is 10. What is likely to happen to the population of tigers?
A.
Tigers from adjoining populations will immigrate into the geographical area of this population.
B.
The tiger population will grow to 16 and then become stable, staying around this figure.
C.
The tigers will die out because they will be unable to sustain their population.
D.
The lifespan of the population of tigers will increase because of less competition.
Answer:
C.
The tigers will die out because they will be unable to sustain their population.
Explanation:
Conservationists establish that the minimal viable population of a population of tigers in an extensive geographical area is 16. Given that the current population of tigers is 10, which is lower than the minimal viable population of the tigers, the tigers are more likely to die out because they will be unable to sustain their population.
Answer:
C. The tigers will die out because they will be unable to sustain their population.
Explanation:
Minimal viable population is the lowest number of a species required to survive in a wild habitat. Because this population of tigers (10) is below the minimal viable population of 16, the population is unlikely to be able to sustain their population and therefore is likely to die out.
Which interaction of the atmosphere with the lithosphere benefits the biosphere
Answer:
Wind.
Explanation:
Wind can erode rocks and create soil, allowing plants to grow and sustaining the food web.
Answer:
A? I’m not completely sure but it might be A. Nitrogen gas is released from volcanoes for plants to use
Explanation:
I’m not really good at this so it might be wrong, sorry
Succulent plants such as aloes are known for their thick stems and leaves, which allow them to store water. Which statement best explains how succulents' thick stems and leaves evolved through natural selection?
A. Thick stems and leaves were selected because succulents need to consume a large supply of water every day.
B. Thick stems and leaves were selected because they help succulents take up more space, which in turn helps them capture more sunlight.
C. Thick stems and leaves were selected because they guarantee that young succulents already have all the water they will need for the rest of their lives.
D. Thick stems and leaves were selected because succulents with these characteristics are more likely to survive hot, dry weather and, thus, produce more offspring.
Answer:
D. Thick stems and leaves were selected because succulents with these characteristics are more likely to survive hot, dry weather and, thus, produce more offspring
Explanation:
The succulents have not always been as they are now, but they have evolved from plants that looked different and existed in different weather conditions. As the environment has been changing, in order to survive, the succulents started to develop traits that would be advantageous for them to survive in the hot and dry weather. The succulents that started to develop such traits, like the thick stem and leaves were the ones selected to survive, as they were the ones that had the advantage in this type of environment. The thick stems and leaves enabled them to store as much water as possible when there is, and also to preserve it for long periods of time, while the succulents that didn't possessed this traits died out because they were not able to sustain the new conditions, nor to be able to reproduce effectively.
Gene mutations can be passed on to future generations and drive natural selection. Choose the best description of how gene mutations are involved in evolution.
A. All gene mutations are passed to future generations and over many generations will contribute to the evolution of new species.
B. Gene mutations can be helpful, harmful, or neutral for an organism's survival. Only mutations that are helpful in the organism's environment would influence its survival and reproduction.
C. Gene mutations can be dominant or recessive for an organism. Dominant genes will be adaptive for future generations, but recessive genes won't.
D. Gene mutations often skip generations, with advantageous traits showing up several generations after the gene mutation was first introduced.
Answer:
Option (B).
Explanation:
Gene mutation may be defined as the sudden, inheritable alteration in the DNA sequence of the organism. Mutation may affect the single base pair or may change the sequence of a chromosome as well.
Gene mutations can be neutral, beneficial or harmful depending on the effect of the gene mutation. The beneficial mutation in the organism's environment can be inherited and influence its survival and reproduction, leads to natural selection.
Thus, the correct answer is option (B).
Which of the following equations represents the right chemical process that occurs in photosynthesis? A. Six molecules of carbon dioxide plus six molecules of water plus light energy converts to six molecules of oxygen plus sugar. B. Six molecules of oxygen plus six molecules of water plus light energy converts to six molecules of carbon dioxide plus sugar. C. Six molecules of carbon dioxide plus sugar plus light energy converts to six molecules of carbon and six molecules of oxygen. D. Six molecules of water plus six molecules of hydrogen plus six molecules of oxygen converts to light energy plus sugar.
Answer:
Below is the numbers that is in the equation of photosynthisis
Explanation:
Answer:
A. Six molecules of carbon dioxide plus six molecules of water plus light energy converts to six molecules of oxygen plus sugar.
Explanation:
Photosynthesis is a process through plants synthesize their own food with the help of sunlight. In this process, light energy from sun is converted into chemical energy through a series of reactions which is stored in the form of food.
In the process, 6 molecules of carbon dioxide (CO2) and 6 molecules of water (H2O) react in the presence of sunlight to produce 1 molecule of glucose sugar. Apart from glucose, 6 molecules of oxygen are also produced during photosynthesis.
A balanced chemical reaction for photosynthesis is as follows :
Sunlight
6CO2 + 6H2O —---------> C6H12O6 + 6O2.
(carbon (water) (glucose) (oxygen)
dioxide)
Monkeys and humans share many of the same DNA sequences and have similar proteins, indicating that a) the two groups belong to the same specie b) the two groups share a relatively recent common ancestor c) the two groups first appeared on Earth at about the same time d) monkeys evolved from humans
Answer:
B
Explanation:
If two creatures share the same DNA traits, this means that they have a common ancestor, whether it be recent, or distant.
We know for a fact, that Monkeys did not evolve from humans, due to the fact they came first. Humans highly likely evolved from monkeys, so we may be considered the same, but genetically we are not.
That rules out all other answers besides B.
Hope this helped! :)
The significant overlap in DNA and proteins between monkeys and humans points to a relatively recent common ancestor, but it does not mean they are the same species, evolved from each other, or appeared on Earth at the same time.
Explanation:The similarities in DNA sequences and proteins shared between monkeys and humans suggest that these two groups share a relatively recent common ancestor. This doesn't mean they belong to the same species or that monkeys evolved from humans. It also doesn't imply they first appeared on Earth at the same time. It means that they have a common ancestor from which both species have evolved, separately, into the distinct creatures they are today. This ancestor lived far more recently than the ancestors we share with less closely related Biological groups.
Learn more about Shared ancestors here:https://brainly.com/question/32108731
#SPJ2
Several bird species feed in a certain species of tree. Each bird species feeds
in a different part of the tree. Which statement is true of these bird species?
A. They have adapted to different niches due to competition
B. They have a carnivorous relationship with the tree species.
C. They have adapted to different niches due to predation
D. They have a symbiotic relationship with the tree species.
Answer:
A. They have adapted to different niches due to competition
Explanation:
If several bird species feed on a certain tree species, these birds will establish a strong competition with each other for food. One result of this competition will be that each species will look for a part of the plant to feed on, probably each species will choose the part of the plant where it will be easier to beat the competition for food. Based on this, we can conclude that the correct answer is "They have adapted to different niches due to competition."
Final answer:
Bird species feeding in different parts of a tree have a) adapted to unique niches to avoid competition, leading to the development of specialized traits and allowing for coexistence without direct competition for resources.
Explanation:
Based on the information provided, multiple bird species feeding in different parts of the same tree species have adapted to different niche due to competition. This differentiation of niches allows species to coexist without direct competition for resources, which can be a driving force behind the development of specialized traits, such as distinctive beak shapes. The fact that different bird species have evolved to utilize various parts of the tree and consume different food sources indicates that they have adapted to different niches due to competition, which aligns with option A. They have not necessarily formed a carnivorous or symbiotic relationship with the tree, nor is their niche adaptation primarily driven by predation.
Which of the following statements explains why diversity makes good business sense? Diversity allows a company to act with economic responsibility. Diversity increases an organization's retained earnings. Diversity makes individuals whole by returning them to the condition or place they would have been had it not been for discrimination. Diversity eliminates glass ceilings. Diversity helps companies attract and retain talented employees
Diversity helps companies attract and retain talented employees.
unlike mendel's pea plants,humans can have a variety of heights,not just tall or short.what does this mean for human height?
A.height is controlled by one gene
B.height is controlled by more than one
C.height is not genetic
D.height is solely determined by whether or not you eat your vegetables