Answer:
7.7 billion
The world's population reached 7.7 billion in mid- 2019, having added one billion people since 2007 and two billion since 1994. The growth rate of the world's population peaked in 1965-1970, when it was increasing by 2.1 per cent per year, on average.
Explanation:
Answer:
There is over a billion people on Earth
Help
How is the nitrogen cycle important to humans?
O It produces free nitrogen that humans can breathe.
O It converts nítrogen into a form that humans can obtain by eating other organisms.
O it produces nitrogen compounds that humans can breathe.
OIt converts nitrogen into a form that humans can obtain by absorbing it through their skin.
Answer: C
Explanation: it produces nitrogen compounds that humans can breath . It is the only logical choice.
It converts nítrogen into a form that humans can obtain by eating other organisms.
What is nitrogen cycle?The conversion of nitrogen between its different life-supporting forms, including nitrates and ammonia, occurs naturally as part of the nitrogen cycle. The nitrogen cycle creates free nitrogen that people can breathe, which is one of the most significant ways it is vital to people.
Humans cannot survive without nitrogen, which is necessary for all life. Additionally, the nitrogen cycle changes nitrogen into a form that people can consume by eating other living things like plants and animals. This is significant because it enables people to obtain the essential nutrients from their diet.
The nitrogen cycle also creates nitrogen molecules for human inhalation. These substances are crucial for preserving a healthy environment and can lessen the impacts of air pollution.
Last but not least, the nitrogen cycle also changes nitrogen into a form that people can absorb via their skin. This can lower the chance of developing specific medical disorders by preserving a healthy balance of nitrogen in the body.
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~MUCH NEEDED HELP ASAP PLS AND TY~
How much solute is needed to make 125 mL of 2.5 mg/mL gelatin solution?
A. 2.5mg
B. 3.125mg
C. 312.5g
D. 3.125g
The concentration of the solute that is needed is calculated by molarity which is by the formula that is number of moles of solute molecules divided by the volume in ml.
What is the formula for the calculation of moles of solute ?Moles of solute are calculated by the given mass divided by molar mass.
The given mass is 2.5 mg/mL that is 2.5 multiplied by 10 raise to the power 3 that is 1000. The answer to it is 2500.0g/ml divided by 125 that is the values put in the formula that is moles of solute which are molar mass of gelatin that is 10000, given mass = 2500 / 10000 which is 0.25 now it is divided by the volume.
The volume is 125 ml that is put in the denominator in which it is like 0.25/125 that is 25 X 10 raise to the power -2 by 125 that is multiplied with 1000 such that the answer is 312.5 g which is the answer.
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Explain how an animal can be both a predator and prey
Answer:
an animal can be both a prey and a predator because the animal may eat meats but can be eaten by animals that are larger than him that also eat meat like a snake will eat field mice but a hawk will swoop down and eat him.
Explanation:
An animal can be both a prey and a predator because the animal may eat meats but can be eaten by animals that are larger than him that also eat meat like a snake.
What do you mean by predators?Organisms that hunt and kill other organisms for food are known as predators. The term "prey" refers to the organisms that the predators consume. Omnivores and carnivores are two types of predators. Predators include sharks, snakes, tigers, and lions.
Wild animals that hunt or prey on other animals are called predators. To survive, all animals require food. To survive, predator animals consume the flesh of their prey. Weasels, birds of prey, wolves, mountain lions, and wild bears are hunters.
It's possible that there will always be someone who wants to take advantage of you. A human predator is someone who tries to take advantage of someone who is weak or in a vulnerable moment, according to my definition.
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At which checkpoint should the drug interrupt the cell cycle to keep DNA from replicating?
A.G1 Checkpoint
В. G2 Checkpoint
C. G2 and M Checkpoint
D. M Checkpoint
Answer:
c. G2 Checkpoint
100%
Explanation:
because that quistions are finish answing with me
The checkpoint should the drug interrupt the cell cycle to keep DNA from replicating is G2 Checkpoint. Thus, option B is correct.
What is cell cycle?Cell cycle has been defined as the cycle in which cell produces, grows and divides. The cell cycle has mainly three steps the first one has been known as G1 phase in which the size of cell increases, S phase synthesis of DNA takes place and the third step has been G2 phase in which cell ready to divide.
Cell has been defined as the base of life as it has the structural as well as functional unit of life. Cell has been made up of pre existing cells and the cell contain various cell organelles such as mitochondria, endoplasmic reticulum, ribosomes, golgi appratus, nucleus, and cytoplasm.
Basically, cell has been of two type one in prokaryotic and another one is eukaryotic. The prokaryotic cell has been known as pre mature cells as they do not contain cell organelles and eukaryotic cell are known as advanced and developed cells as they contain several cell organelles.
Therefore, The checkpoint should the drug interrupt the cell cycle to keep DNA from replicating is G2 Checkpoint. Thus, option B is correct.
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Please help ASAP this needs to be turned in at 4:30 pm
Answer:
number 1 is C
number 2 is B
number 3 is D
Where does each chromosome in a pair of homologous chromosomes come from ORIGINALLY?
A
One comes from the nucleus, and the other comes from the cytoplasm.
B
One comes from the egg, and the other comes from the sperm.
C
They are built from nucleotides using protein instructions.
D
They are copied from the chromosomes that are in the egg cell.
Why do scientists believe that life first emerged from the ocean and onto land well after the ancestors of modern-day cyanobacteria populated the Earth?
The cyanobacteria produced radiant energy from the nitrogen and carbon it absorbed from the shallow sea floor. Organisms needed this light energy to see on land.
These bacteria used visible light energy to create chemical energy, expelling oxygen that was converted to ozone. The ozone blocked the Sun's harmful UV radiation from reaching the ground.
The ancient cyanobacteria converted the Sun's radiant energy to heat, warming the ocean waters. They eventually drove many organisms from the oceans and onto land.
These bacteria provided a much needed chemical energy source for organisms living at the shoreline. Without this food source, the first land-dwelling organisms would not have survived.
Answer:
These bacteria used visible light energy to create chemical energy, expelling oxygen that was converted to ozone. The ozone blocked the Sun's harmful UV radiation from reaching the ground
4) Matching.
A new genetic trait can result from the___of chromosomes during____.
Answer:
A trait is any gene-determined characteristic and is often determined by more than ... by mutated genes that are inherited or that are the result of a new gene mutation. ... A karyotype is a picture of the full set of chromosomes in a person's cells.
Explanation:
In which state(s) of matter does the substance have a definite shape? give one example
plz help me really wask i am beging for u and thank u ! The conception phase of the product life cycle could be described as dealing with
a ideas
b manufacturing
c distribution
d improvement
Answer:
B. Manufacturing
Explanation:
because it is
who created you answer in two words
Answer:
My mom and dad
Explanation:
Hi
which types of organisms perform cellular respiration
Answer:
Organisms from all kingdoms of life, including bacteria, archaea, plants, protists, animals, and fungi, can use cellular respiration
Explanation:
Search it up on google and do research
A polar Bear's thick fur coat along with its color are examples of which of the following features of life?
A
Uses energy
B
Made of cells
C
Adapted to their environment
D
A response to a change in the environment.
2 of 11
Answer:
C Adapted to their environment
Explanation:
Regular bears don't have as thick of a coat as polar bears do because they haven't been in the cold habitat that polar bears have
Answer:
C. Adapted to their environment
Explanation:
Look at all of the different types of bears. Each had to adapt to survive in their given environment. Polar bears adapted to take on the cold which is why they have thick fur coats and also white fur to blend in to their environment.
What is the end result of DNA replication?
Two unique DNA strands
Three unique DNA strands
Two identical DNA strands
One DNA strand
Gregor Mendel ______.
A discovered that blood types are inherited
B conducted genetic experiments during the 1800s
C was an American biologist
HURRY PLEASE AND PICK ONE OF THESE
Answer:
B
Explanation:
Hes the inventor of the punnet square. Sorry not enough info but that is your answer.
SOMEONE PLEASE HELP ME OUT WITH THIS !!!
Answer: I think it is c
Explanation: It sounds better than the rest. Sorry if I am wrong!!
PLEASE HELP I'M BEGGING!!!!!!!!!! Uranium-235 is a popular choice of fuel for nuclear reactors. But U-235 doesn't always fission the same way. Below are three ways it can split. Complete the nuclear equations so they balance..... fill in the blank line(s)
Answer:
its B but the numbers you need to fill in are 92 (top) and 36 (bottom) and Kr
Explanation:
(92)U[235] + (0)n[1] -----> (56)Ba[141] + (36)Kr[92] +3{ (0)n[1] } + energy
() is atomic no. and [] is atomic mass.
An atomic nucleus is composed of
es
A)
protons.
B)
protons and neutrons.
C)
protons and electrons.
D)
protons, neutrons, and electrons.
Answer:
B)
Explanation:
protons and neutrons
Propagation involving male and female reproductive cells are called
Answer:
Fertilization? I think this is correct. Sorry if not
Explanation:
Help me plssssss Last questionnn!!!!
Answer:ur answer is trustfull
Explanation:
a. What gland secretes LH (luteinizing hormone)? b. On what day does the LH reach its peak concentration? c. What happens to the egg in the ovary on Day 14 after LH levels reach their peak? Refer to B – Events in the Ovary.
Answer:
a- Pituitary Gland
b- 13
c- The egg is released from the ovary
Explanation:
I love jem and the holograms
Answer:
Steven universe is one of the best shows ever created
Explanation:
just because
Answer:
I love Steven Universe! Cool.
Explanation:
Wait, or is this not steven universe, and i miss watching it, lol
PLEASE HELP. 100 pts!!
Cattle and buffalo share a similar fundamental niche, the entire set of conditions under which a population can survive and reproduce. A realized niche is the set of conditions actually used by a given population. Explain what the data suggest about the realized niches of the cattle and buffalo and their ability to coexist. How can this data be used as an example of the competitive exclusion principle? Use evidence to support your explanation.
Complete answer:
You will find the table that provides data about the two species in the attached files.
Answer:
Because in the table provided you can see that, even when both species can use the same resources, certain vegetable species are eaten only by buffalo and not by cattle, while some other plants are eaten by cattle and not by buffalo.
Explanation:
The realized niche refers to the restricted conditions in which a species can live and survive as a result of environmental physic characteristics and the interaction with other species.
The competitive exclusion principle establishes that two or more species that share the same niche requirements and are in biological competition for the same resources, won´t be able to coexist indefinitely in the same space if the other ecological factors are constant. When the superior competitor occupies entirely the inferior competitor´s fundamental niche, the superior species has advantages over the other species and monopolizes all the resources. At this point, the inferior species is displaced and must adapt to use other resources changing its behavior, or must migrate to another area where it can get access to its needs, or get extinct.
Resources partitioning refers to one dominant species monopolizing the resources, and the other inferior species use other resources -partially or completely-, migrate or get extinguished. A way in which species can divide resources is by living in different habitat areas. These species might eat the same food, and can roost in different places within the habitat. This resource partitioning and differentiation in the function of their physical location allows both species to coexist more effectively.
In the exposed example, cattle and buffalo share the same fundamental niche, meaning that both of them can consume the same vegetable species, although in some cases, cattle eat certain species that buffalo does not, and vice-versa. Probably it occurred resource partitioning between these species, reflected in the fact that buffalo feeds on some species, while cattle feed on some other species.
Answer:
Complete answer:
You will find the table that provides data about the two species in the attached files.
Answer:
Because in the table provided you can see that, even when both species can use the same resources, certain vegetable species are eaten only by buffalo and not by cattle, while some other plants are eaten by cattle and not by buffalo.
Explanation:
The realized niche refers to the restricted conditions in which a species can live and survive as a result of environmental physic characteristics and the interaction with other species.
The competitive exclusion principle establishes that two or more species that share the same niche requirements and are in biological competition for the same resources, won´t be able to coexist indefinitely in the same space if the other ecological factors are constant. When the superior competitor occupies entirely the inferior competitor´s fundamental niche, the superior species has advantages over the other species and monopolizes all the resources. At this point, the inferior species is displaced and must adapt to use other resources changing its behavior, or must migrate to another area where it can get access to its needs, or get extinct.
Resources partitioning refers to one dominant species monopolizing the resources, and the other inferior species use other resources -partially or completely-, migrate or get extinguished. A way in which species can divide resources is by living in different habitat areas. These species might eat the same food, and can roost in different places within the habitat. This resource partitioning and differentiation in the function of their physical location allows both species to coexist more effectively.
In the exposed example, cattle and buffalo share the same fundamental niche, meaning that both of them can consume the same vegetable species, although in some cases, cattle eat certain species that buffalo does not, and vice-versa. Probably it occurred resource partitioning between these species, reflected in the fact that buffalo feeds on some species, while cattle feed on some other species.
Explanation:
During osmosis, which of the following is most likely to pass through a selectively permeable membrane?
A. glucose molecules
B. water molecules
C. charged molecules
D. large molecules
Answer:
The answer is B
Explanation:
12.
Choose the best answer.
Genetic drift, a mechanism of evolution, works better in ______________ populations.
small
big
ancient
moving
Answer:
I think it is moving, hope it helps
please help im tryna get a good grade please
Answer:
The correct answer is "B. when the lithosphere slides downhill due to gravity".
Explanation:
Ridge push is a proposed driving force for plate motion in plate tectonics that occurs at mid-ocean ridges as the result of the rigid lithosphere sliding down the hot, raised asthenosphere below mid-ocean ridges.
What are two pieces of evidence that support the Big Bang Theory?
1.
red shift of light and cosmic background radiation
2.
red shift of light and the different shapes of galaxies
3.
planetary motion and cosmic background radiation
4.
planetary motion and the different shapes of galaxies
Answer:
1
Explanation:
The two (2) pieces of evidence that support the Big Bang Theory are: 1. red shift of light and cosmic background radiation.
The Big Bang Theory can be defined as an explanation by astronomers to describe how the universe was formed or started. These group of astronomers posited and argued that the whole universe stretched from a single point and then expanded to the way or manner it is right now.
Basically, Georges Lemaître was the astronomer that stated the Big Bang Theory and some of the principles of the Big Bang Theory include;
The universe stretched from a single point.The universe continues to expand.According to the Big Bang Theory, cosmic background radiation is typically a radiation that permeates our universe (space). Also, a red shift of light is a phenomenon which describes how light changes as physical objects in space move across the universe.
In conclusion, the two (2) pieces of evidence that support the Big Bang Theory are:
1. Red shift of light.
2. Cosmic background radiation.
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A car is accelerating at a speed of 10 m/s to 60 m/s in 5 seconds.
PLS HELP
Answer:
i have no idea im so sorryyyyyyy
Explanation:
anyways stan bts, twice, itzy, blackpink, aespa, redvelvet :))))
how does astronomers get around light pollution
Answer:
they us concentrated scopes that go directly out of the atmosphere without any interruption
