Answer:
Population growth is the increase in the number of individuals in a population. Global human population growth amounts to around 83 million annually, or 1.1% per year. The global population has grown from 1 billion in 1800 to 7.774 billion in 2020.
Explanation:
Population growth is the increase in the number of individuals in a population due to more births and immigration than deaths and emigration, which is measured by the population growth rate.
Explanation:Population growth refers to the increase in the number of individuals in a given population over a specific period of time. This growth can occur due to various factors, such as a higher number of births than deaths, and the process of immigration, where individuals move into the region. Conversely, populations can decrease through deaths and emigration, where individuals leave the area. These factors together determine the population growth rate, which measures how quickly the population size changes.
Population structure, which includes the age-sex distribution, along with fertility, mortality, and migration rates, also plays a crucial role in influencing the population growth. It is important to note that populations don't always grow; their growth rates can be affected by the local economy, available resources, and environmental conditions. Demography, the study of populations, is essential to understand and manage these growth dynamics.
Suppose that a mouse with black fur has both an
allele for black fur and an allele for white fur (Bb).
Based on this information, you can conclude that
the dominant allele must be for fur and
the recessive allele must be for * fur.
Answer: The black fur allele is dominant and the white fur allele is recessive
Explanation: The mouse is black, and the dominant allele will show up. It is still carrying the white fur allele but it is recessive.
You can conclude that the dominant allele is black fur and the recessive allele is for white fur.
We know this because the mouse has black fur. Since dominant alleles will win over recessive alleles, black fur must be dominant since that’s the color the mouse shows.
Name and describe one advanced trait found in pines and lacking in ferns.
Explanation:
CAN YOU PLEASE EXPLAIN UR ANSWER?
DO YOU MEAN ADVANTAGE OR DISADVANTAGE
Final answer:
Pines possess seeds for reproduction, an advanced trait not found in ferns, as ferns reproduce via spores.
Explanation:
One advanced trait found in pines, but lacking in ferns, is the presence of seeds. Pines are part of the conifers, which are gymnosperms, meaning they have vascular tissue and produce seeds but do not have flowers. Unlike ferns, which reproduce via spores and display characteristics such as large fronds and sori on the underside of the fronds, pines produce seeds in cones, which are modified leaves known as strobili. These seeds enable pines to reproduce without the need for water, an advantage over ferns' spore-based reproduction that requires moist environments for the spores to germinate successfully.
An organism that has adapted to surviving in both salt water and fresh water would be best suited to survive in which aquatic ecosystem ?
A.) the intertidal zone
B.) a river
C.) an estuary
D.) the open ocean
Answer:
Option C, Estuary
Explanation:
An estuary is a geographical entity where the salty water of ocean mixes with fresh water of river. The resulting water is known as brackish water. The brackish water is not as salty as that of ocean and also the salinity level of water rise and fall regularly.
Thus, an organism that is able to live in both salty water and fresh water environment can survive in an estuary.
Hence, option C is correct
Answer:
C. Estuary
Explanation:
All DNA from every living organism contains the same ____ just in a different order."
nitrogen bases
phosphate bases
bases
nitrogen acids
which arrow represents the change of state described
above?
The diagram shows changes of state between solid, liquid,
and gas. The atoms of a substance gain energy during a
change of state. Before the change, the atoms are close
together and cannot slide past one another. After the
change, the substance can fill its container.
A•L
B•м
C•Ν
D•O
gas
solid
liquid
Answer:
gas
Explanation:
which offspring could not arise from the parent cells with the chromosomes shown below? Assume crossovers can occur between chromosome pairs in the parent cells.
The answer is Offspring B (which is the fully black bug on the left.)
I just took this assessment.
The exchange of genes during the cell cycle is called crossing over. Crossing over helps to make the new character in the future generation.
Crossing over is helpful because of the following:-
New character New variation.Crossing over occurs at the diplotene stage of prophase in meiosis - I. The position of the crossing over is random so that they can mix the variety of genes and form a new character.
According to the question and the concept of crossing over, the offspring shows the character from both the parents.
Hence the correct option is B it does not have any character from the parents.
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Pls help this is just super confusing. Can you dumb it down?
Answer:
A. Aorta
B. Pulmonary Artery
C. Pulmonary vein
D. Left atrium
E. Mitral valve
F. Lift ventricle
G. Right ventricle
H. Tricuspid valve
I. Inferior vena cava
J. Right atrium
K. Pulmonic valve
L. Superior vena cava
Explanation:
Aorta is big artery which takes blood from the heart and gives it to all body. Pulmonary artery carries deoxygenated blood from the heart to the lungs while pulmonary vein carries oxygenated blood from the lungs to the heart. Mitral and tricuspid valves prevent the backward flow of blood in the heart. Superior and inferior vena cava is a big vein which collects deoxygenated blood from all body.
Short Answer: How can rock layers and fossils that may be found in completely different locations still be used to make an accurate timeline for geologists?
Answer:
The fossils present in a rock exposure or in a core hole can be used to determine the ages of rocks very precisely. Scientists must study the fossils from a variety of environments to build a complete picture of the animals and plants that were living at a particular time in the past.
Explanation:
Which gaseous giant did Renaissance scientist such as Galileo know about? Select two options
Answer: Jupiter and Saturn
Explanation:
Answer:
Jupiter and Saturn answer edge 2020
Explanation:
Your sister is very good at playing the piano. What is her piano playing
ability an example of?
A.a learned behavior
B.an inherited trait
C.a dominant gene
D.a recessive gene
Answer:
A
Explanation:
Individuals are not born immediately able to play the piano. Therefore, piano playing is not an inherited trait. You get good because you practice.
This is in contrast to physical traits like hair color, ability to role your tongue, or genetic diseases. These are not learned at all, instead, they appear regardless of lifestyle.
However, some genes are thought to predispose you to musical talent. Two people could be born with exactly the same genes that make them good at piano. If one practiced for 8 hours every day, then they will be very good. If the other one never practiced, they wont be able to play.
In contrast, one person could have genes that make them great at piano, and one could have genes that make them terrible. Even if they practice the exact same amount, the one with the better-suited genes will likely progress more quickly!
However, the skill is still a learned trait.
Please help!! It’s for a hw assignment
Which is a true statement about all organisms?
A) they divide
B) they reproduce
C) they perform photosynthesis
D) they perform cellular respiration
What do planeria feed on while they are regenerating
Answer:
living or dead small animals
Explanation:
Planaria eat living or dead small animals that they suck up with their muscular mouths.
Do work man not fortnite duo questions
Which of the following is causing natural disasters and disrupting communities?
climate change
global infrastructure
alternate energy sources
experimental technologies
i hope this helps! :)
The answer is A which is CLIMATE CHANGE
!00 pointzzz
Help me nd yeahhh!! (see attachment)
Answer:
the answer is A
A force is described by its mass and direction
1. A cell was poisoned by a substance that destroyed all of its mitochondria. Circle all of the cell
transport processes listed that would still be able to continue.
a. Osmosis
d. Exocytosis
b. Diffusion
e. Pinocytosis
c. Facilitated diffusion
f. Phagocytosis
Answer:
a. Osmosis
b. Diffusion
c. Facilitated diffusion
Explanation:
Mitochondria is the power house of the cell which is responsible for the production of energy from glucose molecules. If they are destroyed, no energy is available for transport of material in or outside of the cell. Only osmosis, diffusion and facilitated diffusion occurs because they are the types of passive transport in which molecules moves from a region of higher concentration to the region lower concentration without the use of energy.
Despite the absence of mitochondria, a cell can still conduct osmosis, diffusion, facilitated diffusion, exocytosis, pinocytosis, and phagocytosis. These processes don't rely on mitochondria for energy as they either use passive transport or acquire energy from the cytosol.
Explanation:In the absence of mitochondria, a cell would still be able to conduct the following transport processes: osmosis, diffusion, facilitated diffusion, exocytosis, pinocytosis, and phagocytosis.
Osmosis is the movement of water across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration. Diffusion is the process where particles spread out from an area of high concentration to an area of low concentration. Facilitated diffusion is a type of passive transport that allows substances to cross cell membranes with the help of carrier proteins.
Exocytosis is the process by which a cell transports secretory products through the cytoplasm to the plasma membrane. Pinocytosis is a type of endocytosis wherein the cell takes in extracellular fluids.
Phagocytosis is a process wherein a cell engulfs a solid particle to form an internal compartment known as a phagosome. These processes do not rely on mitochondria for energy as they use passive transport mechanisms, or in the case of endocytosis, energy from the cytosol.
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Forces- content practice : please help
Answer:
On Tuesday night, CNN's Don Lemon asked former Georgia state senator (and potential vice presidential pick) Stacey Abrams about allegations made by a former Senate staffer that Joe Biden had sexually assaulted her in the early 1990s. Here's how she responded (bolding is mine):
"I believe that women deserve to be heard and I believe they need to be listened to, but I also believe that those allegations have to be investigated by credible sources. ... The New York Times did a deep investigation and they found that the accusation was not credible. I believe Joe Biden."
That bolded section about The New York Times finding that Reade's accusation was "not credible" comes directly from talking points being distributed by Biden's campaign, talking points first reported on by BuzzFeed's Ruby Cramer. Here's the specific language from Biden's talking points:
"Biden believes that all women have the right to be heard and to have their claims thoroughly review. In this case, a thorough review by the New York Times has led to the truth: this incident did not happen."
Explanation:
ANSWER FOR BRAINLEST
Which statement best describes how geothermal energy is made to make electricity?
Which of the following is a possible cost of using renewable resources?
Answer:
Enviromental dammage
Explanation:
Answer:
All of the above
Explanation:
What allows water molecules to stick together so they can be pulled upward by the force of transpiration
Where do plants get the food they need for energy?*
O They absorb it directly from the sun.
O They absorb it directly from the soil.
O They produce it during photosynthesis.
Answer:
They produce it during photosynthesis.
Explanation:
Plants make food in their leaves. The leaves contain a pigment called chlorophyll, which colors the leaves green. Chlorophyll can make food the plant can use from carbon dioxide, water, nutrients, and energy from sunlight. This process is called photosynthesis.
Question 11(Multiple Choice Worth 2 points)
(01.01 LC)
What is the most important reason to publish results as part of the scientific process?
It helps the public learn about science.
It allows other scientists to check findings.
It gives the science community recognition.
It helps establish sources of funding.
I believe it’s the 2nd one
What is cell differentiation and why is it important
Final answer:
Cell differentiation is a biological process where unspecialized cells become specialized into distinct cell types with unique functions, which is integral for the development and functioning of multicellular organisms.
Explanation:
What is Cell Differentiation?
Cell differentiation is the process by which unspecialized cells become specialized into one of many different types of cells, such as neurons, muscle cells, or epithelial cells. This specialization is crucial for the development of a complex organism, as it allows cells to assume unique structures and functions necessary for the organism's survival. Stem cells are pivotal in this process because they have the potential to differentiate into various specialized cells. The differentiation process is guided by the selective expression of certain genes within a cell's DNA, influenced by transcription factors and other regulatory mechanisms.
Why Is Cell Differentiation Important?
Cell differentiation is essential for the development of the diverse array of cell types found in an organism. It enables the formation of tissues and organs with highly specialized functions. For instance, during differentiation, cells in the ectoderm layer of an embryo may express genes specific to skin cells, leading them to become epidermal cells. These processes are tightly regulated by complex signaling pathways, ensuring that each cell type develops correctly.
How do cricket make their chirping sound
Answer:
The bottom of a cricket wing is covered with teeth-like ridges that make it rough. The upper surface of the wing is like a scraper. When crickets rub the upper and lower parts of their wings together, they create a chirping sound called “stridulating." ... The warmer it is, the more crickets will sing.
Explanation:
Crickets chirp by rubbing their wings together, a process called stridulation, to attract mates and establish territory.
Stridulation involves rubbing parts of their body together, specifically their wings, to produce sound. Male crickets engage in stridulation to attract a mate, establish territory, and possibly repel other males. The sound is amplified by their resonating body structures, allowing the chirp to carry over significant distances.
A cell has the following features; a nucleus, mitochondria, ribosomes, a cell wall made of chiton and a cell membrane.
What type of cell is described?
A) animal
B) bacteria
C) fungi
D) plant
A cell which has features like nucleus, mitochondria, ribosomes, a cell wall made of chiton and a cell membrane is animal.
What is nucleus?It contains the genetic material DNA located in the nucleolus region.
It also regulates the growth and divisions of cell.
What is Mitochondria?They are the powerhouse of a cell.
What is Ribosomes?They are the sites of protein synthesis.
What is Cell Membrane?
It controls the entry and exit of the nutrients from the Cell.
Explanation for correct option:
Animal - Animal cell contains Nucleus, mitochondria, ribosomes and a cell wall and a cell membrane but do not contains Chloroplasts which makes them different plant cell.
Explanation for other options:
Bacterial cell wall contains water, enzymes, nutrients, ribosomes, chromosomes and plasmids.
Fungi cell contains chitin, glucans, and glycoproteins.
Plant cell contains cellulose microfibrils, hemicellulose, pectin, lignin, and soluble protein.
Hence, option A is correct.
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What is the purpose of tRNA
Answer: tRNAs function at specific sites in the ribosome during translation, which is a process that synthesizes a protein from an mRNA molecule. Basically its job it's to transfer the RNA to the rRNA so it can "build" the protein.
Explanation:
Answer:
The purpose of tRNA is to bring amino acids to the ribosome, where they are made into proteins. Hope that helps!
How are hormones levels regulated?
A.By nerve impulses
B. By a feedback loop
C.By sexual reproduction
D.by involuntary
Why is the fusion reaction not currently used to produce energy, especially as it is a "clean" form of energy that does not create radioactive or nuclear byproducts?
A- There are currently not enough fuels for fusion reactions.
B- Fusion reactions are highly endothermic, making them dangerous.
C- Fusion reactions do not yet produce enough energy.
D- The heat it takes to start a fusion reaction is too high to contain.
Fusion energy is not currently used due to the extreme temperatures required for initiation and containment challenges. While it holds the promise of clean energy without substantial radioactive byproducts, a viable containment solution for the high temperatures has not yet been developed. Answer D is correct.
Explanation:The reason why fusion reaction is not currently used to produce energy is because of the extremely high temperatures needed to initiate and sustain the reactions. Unlike uncontrolled fusion, which can be achieved via fusion bombs utilizing fission bombs, controlled fusion for energy production poses a significant challenge. Containment methods such as magnetic fields or focused laser beams are being researched, but a viable, self-sustaining fusion reactor has yet to be developed.
To perform fusion, conditions of high pressure and temperatures (~107 K) similar to those found inside stars are necessary. These conditions are so extreme that no mechanical device can contain the plasma needed for fusion. Therefore, answer D is correct—the heat required to start a fusion reaction is too high to contain with current technology.
The graph shows the frequency of two alleles for a genetic trait in a population.
Which process most likely resulted in the effect observed in generation 5?
A. random mating
B. increase in birth rates
C. natural selection
D. population isolation
The graph shows the frequency of two alleles for a genetic trait in a population, and the process that most likely resulted in the effect observed in generation 5 is natural selection, which is in option C.
What is natural selection?Natural selection is a process in which nature selects organisms. For example, in a population of 500 organisms, only 100 are the fittest as per that climate, and they have the proper immunity and reproduce to carry on their genes to the next generation. These organisms are selected by natural selection, and the rest are eliminated.
Hence, the graph shows the frequency of two alleles for a genetic trait in a population, and the process that most likely resulted in the effect observed in generation 5 is natural selection, which is in option C.
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Please help me with bio
Answer:
all of the multiple choice are correct.
the answer to the second graph one is C the last one, or Monarch butterfly population is decreasing.
The one about Frank and maple trees is A, or carrying capacity. The second one about Frank and the maple trees is also A, or population distribution.
Explanation: