Which of the following is the best example of a population?
Answer:
B) A school of sunfish.
In biology, a population is a number of all the organisms of the same group or species who live in a particular geographical area and are capable of interbreeding
Answer:B
Explanation: JUST TOOK THE TEST TRUST ME!
A. Mutualism
B.Commensalism
C.Parasitism
D.Predation
Answer:
D.Predation
Explanation:
Living organism interact with one another in their natural environment. The interaction of two organisms is called SYMBIOSIS. Symbiosis, however, can be of different types depending on how the organisms relate. One type of symbiotic relationship between organisms is called PREDATION.
Predation is a relationship between two organism in which one organism called PREDATOR kills and feeds on the other organism called PREY in order to obtain energy. In this question, a Manta Ray and a zooplankton is shown.
The Manta ray is described as an aquatic organism that feeds on tiny species like fishes while the zooplankton is a tiny organism found in water bodies. The Manta Ray is the predator that kills and feeds on the zooplankton, hence, the relationship is a PREDATION.
Write at least 3 sentences explaining why plants are so important to humans. *
Answer:
Please mark brainliest :)
Explanation:
Plants provide oxygen for humans through photosynthesis. They can store carbon which is a greenhouse gas. Plants are a staple in humans' diets. Bonus: They are a source of income for farmers. They hold important vitamins. They can be beneficial to healthy soil and keep it from blowing away or eroding.
Hope this helped :)
2. Which of the following would be a cause of chemical weathering?
a. hurricanes
b. freezing and thawing
c. tree roots splitting a rock
d. acid rain
Answer:
acid rain
Explanation:
What is the purpose of nitrogen-fixing bacteria?
Answer: The symbiotic nitrogen-fixing bacteria invade the root hairs of host plants, where they multiply and stimulate formation of root nodules, enlargements of plant cells and bacteria in intimate association. Within the nodules the bacteria convert free nitrogen to ammonia, which the host plant utilizes for its development. brainliest?
Explanation:
Answer:
Within the nodules the bacteria convert free nitrogen to ammonia, which the host plant utilizes for its development.
Explanation:
Which of the following is the best definition of alternative energy?
A. Energy sources that can be used in place of hydroelectric energy
B. Energy sources that can be used in place of wind energy
C. Energy sources that can be used in place of coal
D. Energy sources that can be used in place of fossil fuels
Answer:
D
Explanation:
Alternative energy is best defined as the use of energy sources other than traditional fossil fuels, which are considered environmentally harmful and are in short supply. Fossil fuels consist of natural gas, coal, and oil. Currently, fossil fuels are the most used energy source to heat our homes and power our cars.
Answer:
D.)
Explanation:
Alternative energy is best defined as the use of energy sources other than traditional fossil fuels, which are considered environmental harmful and are in short supply.
The four differing nucleotide parts, called bases, are made of a few:Immersive Reader
A. Carbon and oxygen atoms
B. Hydrogen atoms
C. Nitrogen and phosphorus atoms
D. All of the above
The four differing nucleotide parts, called bases which are made of Carbon and oxygen atoms, Hydrogen atoms and Nitrogen and phosphorus atoms. So, the correct option is D.
What is Nucleotide?Nucleotides are defined as organic molecules composed of a nitrogenous base, a pentose sugar and a phosphate, which serve as the monomeric units of nucleic acid polymers such as deoxyribonucleic acid and ribonucleic acid, which are essential for all life-forms. There are essential biomolecules inside the Earth.
The sugar and phosphate groups which form the backbone of the DNA double helix, while the bases are located in the middle, a chemical bond between the phosphate group of one nucleotide and the sugar backbone of a neighboring nucleotide hold it together.
Therefore, the correct option is D.
Learn more about Nucleotide, here:
https://brainly.com/question/15592325
#SPJ6
What is human fetal development? I need simple definition
Answer:
Fetal development is when many of it's organs become fully developed.
Two species of three-spined stickleback fish have been found together in five different lakes. The larger, bottom-dwelling species feeds on large prey close to shore. A surface-dwelling species feeds on small plankton in open water. DNA analysis shows that the two species in each lake are more closely related to each other than they are to any of the other species in the lake. Which prezygotic mechanism most likely allowed divergence of an ancestral species into these present-day species
Answer:
The answer is "Sympatric speciation due to disruptive selection"
Explanation:
Disruptive selection is a certain type of natural choice, that aggressively favors all ends of the spectrum in a moderate community. Disruptive selection is often deduced by a phyletic prepared to change to contribute to speciation. These two species happened due to various habitats associated with extreme speciation due to various confusing choices.
4. Analyze: Compare the offspring traits to the parent traits.
A. Which traits were passed from parents to offspring? __________________________
B. Which traits were not passed down? ______________________________________
Traits that are not passed down (not inherited) are called acquired traits.
Answer: 4a. The transmission of characteristics from parents to offspring is called heredity, and the characteristics that are inherited can be predicted. 4b. An acquired characteristic is a non-heritable change in a function or structure of a living organism caused after birth by disease, injury, accident, deliberate modification, variation, repeated use, disuse, misuse, or other environmental influence. Acquired traits are synonymous with acquired characteristics.
Explanation:
Explain why finding the average energy of the system would be a smarter way to record the temperature than giving the energy of each individual particle
Answer:
See Explanation
Explanation:
Temperature is defined as the average kinetic energy of the particles of a system.
In a system, there are several particles moving at various velocities and having various values of kinetic energy. It is very difficult to determine the individual kinetic energies of each individual particle.
Hence, we only need to obtain the average kinetic energy of the particles of the system in order to record the temperature.
Which of the following describes a characteristie of blood viscosity
a. Blood viscosity describes how red your blood is.
b. Blood viscosity describes how thick or thin your blood is,
Blood viscosity describes amount of oxyven found in your blood,
d. Blood viscosity describes the amount of pressure your blood places on the walls of your vions and
arteries,
PLEASE HELP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! T-T
I KNOW IT LOOKS HARD BUT IT RLY ISNT
Answer:Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
Explanation:
Why does the mitochondrial gene tree suggest a later split? Why the disparity between the nuclear gene tree?
this is the link: https://learn.genetics.utah.edu/content/evolution/bears/
Answer:
Why does the mitochondrial gene tree suggest a later split?The mitochondrial gene tree suggests a later split because it occurred hybridization later in time, with the transference of the brown bear mitochondrial genetic information to the polar bear population. So the mitochondrial gene tree exhibits a later divergence.
Why the disparity between the nuclear gene tree?Because the first divergence event of the common ancestor occurred 60,000 years ago, evidenced by nuclear DNI and mitochondrial DNI. However, 100,000 years ago, concerning the mitochondrial genetic material, the hybridization event defined a new more recent common ancestor between the two species.
Explanation:
The use of mitochondrial DNA might present a few problems that need to be considered in evolution studies. It involves only one locus, so it has some limitations when reconstructing history, especially if the locus went through any process, such as natural selection, bottleneck events, or its transference to another population due to hybridization. There is also a high possibility of an incomplete reconstruction of the population history if males and females have different dispersal patterns.
The most proper way of reconstructing history is by complementing mitochondrial information with nuclear genetic information and evaluating their concordancies.
In the exposed example, 600,000 years ago, the original species split into the polar bear and the brown bear. But 100,000 years ago, hybridization occurred between a brown bear female and a polar bear male. The offspring joined the polar bear population, carrying the female genetic information, nuclear and mitochondrial. With time, these individuals interbred with the polar bears, diluting the nuclear brown bear genetic information. However, females carrying the brown bear mitochondrial DNI seemed to be more successful reproductively than the polar bear females. The mitochondrial information, hence, has been in the population for many generations, until today. And this information came from a more recent common ancestor, compared with nuclear genetic information.
Which of the following is a disadvantage of asexual reproduction?
please help thanks!!!!
Answer:
I believe that the smallest is Nucleotide, bases, genes, DNA, Chromsomes.
Explanation:
Chandra X-ray observatory has reported that they have found a new star near our solar system. The Chandra X-ray telescope detects x-rays in space. What does the use of the x-ray telescope review about the newly found star? ( PLS EXPLAIN Y THE ANSWER IS CORRECT)
a. The star produces electromagnetic waves with shorter wavelengths than visible light.
b. The star produces electromagnetic waves with lower frequencies than visible light.
c. The star produces pictures in addition to electromagnetic waves.
d. The star produces vibrating electrons
Answer:
It’s possibly b, or a but I am definitelyonly 49% sure
Explanation:
Hope this helped you Arianna!
how are bacterias different from animals ?
Answer:
Bacteria are neither animals nor plants.... Because bacteria are prokaryotic, they do not have a nucleus and no membrane-bound organelles. In contrast, plants and animals are made up of eukaryotic cells, which means they have a nucleus and membrane-bound organelles like mitochondria or golgi apparatus.
Explanation:
Answer:
Bacterias have simple cells and are typically single cell organisms where as animals which have more complex cells are are multi celled organisms UwU
HOPE THIS HELPS
-Todo <3
Explanation:
PLEASE HELP ME ASAPPPPPPPPPPPPPP!!!!!!!!! No links !!!!
Answer:
1. Tundra.
2. Desert.
3. Tropical Rain Forest.
4. Grassland.
Explanation:
A gene has 2 alleles, R & B, List the possible genotypes? I also need help with questions 5, 6, 7 and 8 please help! Pls look at the picture! I will mark whoever sounds best the brain! Ty!
Answer:
5.) The possible genotypes should be: RR RB BB ( if the could for the same proteins)
6.) Frequency of R: 0.5
7.)Frequency of R: 0.5
8.)Frequency of R: 0.375
Explanation:
5.) If R and B code for the different forms of the same protein then they are only a few possible out comes
6.) First calculate the total alleles in population
allele R= 40
Allele B=40
total allele = R+B= 40+40
=80
Now to find allele R frequency is:
(Total R alleles) / (Total allele in pop)
40/80=
0.5
7.)Calculate the total alleles
Alleles from for R
RR= 10
R=10x 2= 20
Multiply the value by 2 because there are 2 R alleles present in
RB=20
R=20
Number doesn't change there is only 1 R allele
Total R=20+20
=40
Alleles For B
BB=10
B=10×2
=20
Same thing here, two B alleles together so multiple by 2
RB=20
B=20
Total B= 20+20
=40
Total alleles in pop add
40+40
=80
Frequency of R
Total of R/Total Alleles
=40/80
=0.5
8.)Repeat the same thing in 7 but use different numbers
RR=10
R=10x2
=20
RB=10
R=10
Total R= 20+10
=30
This makes a water molecule a ___ which allows for other water molecules to "stick" together
A . non-polar molecule
B. ionic molecule
C. polar molecule
Answer:
Polar molecule
Explanation:
<3
Urgent!!
Which of the following is a major goal of fisheries managers?
A.Using resources intelligently so they will be preserved.
B.Increasing fish production as much as possible.
C.Reducing public consumption of fish to protect fish populations.
D.Preserving natural resources in a pristine and unused state.
What is the significance of a global mean=53?
Answer:
it is a very complicated subject but it all started when micheal scott found that the earth was flat and then he invited 53 people to a party and they tried to reach all around the globe and acomplished it.
Explanation:
It is a very complicated subject but it all started when micheal scott found that the earth was flat and then he invited 53 people to a party and they tried to reach all around the globe and acomplished it.
What do you mean by Globalization?Globalization is the process of exchange of goods, services, technology, finance, information, and ideas across the national boundaries. Globalization strategies refers to strategies developed by a company to prepare for development beyond its borders.
For convenience, it is divided into three strategies that are international, multinational, and global.
Thus, this could be the answer.
To learn more about Globalization click here:
https://brainly.com/question/14638592
#SPJ2
What type of tissue do pollutants collect in?
No links
Answer:
one type of tissue is animal tissue
Explanation:
brainliest pls
Why did Neanderthals evolve to have a wider, stockier body shape?
1. because they spent their life in trees
2. because they migrated to Europe with a colder climate
3. because they were bipedal
4. because they stayed in Africa with a warm, dry climate
Answer:
2.
Explanation:
they needed less skin surface area touching the cold and more wider body shape so that it can keep warm its body, like how fat people are basically insulated and have a coat around their organs
Answer:
2. because they migrated to Europe with a colder climate
Explanation:
erectus populations lived in southeastern Europe by 1.8 million years ago. Neanderthal populations date back at least as far as 400,000 years ago in the Atapuerca Mountains, Spain.
Your cells have a unique MHC (major histocompatibility complex). Directions for producing MHCs come from _________________.
A. the helper T-cells
B. the thymus
C. inherited DNA
D. the bone marrow
The directions for generating MHC comes from the option c. inherited DNA. hence, the option c is correct.
What is MHC?The full form is a major histocompatibility complex. It is the genes group that have the proteins code that should be founded on the cell surface which helped the immune system, that recorded in the foreign substance.
So at the time of directing, it produced MHC that came from inherited DNA.
hence, the option c is correct.
learn more about DNA here: https://brainly.com/question/19739527
State TWO reasons how bacteria can be useful to humans,
Answer: Creating products, such as ethanol and enzymes.
Making drugs, such as antibiotics and vaccines.
Making biogas, such as methane.
Cleaning up oil spills and toxic wastes. Bacteria have long been used by humans to create food products such as cheese, yoghurt, pickles, soy sauce and vinegar. We are also able to use bacteria to break down our sewage and to clean up oil spills.
Explanation:
Answer:
They help to digest substances that the human body cannot break down, like many carbohydrates and things called short chain fatty acids. Friendly bacteria give you protection from the microorganisms that could cause serious illness.
Explanation:
Which of the following conditions is least likely to have an effect on natural selection in a species of sheep that are geographically isolated on an island?
A. available niches
B. existing predators
C. chromosome number
D. available food resources
Answer:
A. available niches
Hope it helps!
Answer:
C.
Chromosome number
Explanation:
In a human karyotype, the 46 chromosomes of the human genome are arranged into 23 pairs. Encyclopædia Britannica, Inc. An organism with any multiple diploid numbers of chromosomes is said to be polyploid.
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
Answer:
pollute groundwater
Explanation:
1.) A rare disease which is due to a recessive allele (a) that is lethal when
The genotype (aa), occurs with a frequency of one in a million. How many
individuals in a town of 14,000 can be expected to carry this allele? (round
up to nearest whole number
2.) Eleven organisms express the recessive allele in a population of 2,646. How
many organisms are carriers? (round to nearest whole number)