Answer:
D. All of the living things that interact within a forest ecosystem
Explanation:
A biological community consists of all biotic(living) organisms within an ecosystem.
Pollen grains help scientist
Answer:
true
Explanation:
Pollen grains help scientists identify plants and make assumptions on past climate conditions. understand tree growth and make assumptions on past climate conditions.
Answer:
A
identify plants and make assumptions on past climate conditions.
How is the growth of land plants proof that there is carbon in the atmosphere? How does carbon exist in the atmosphere, biosphere, and geosphere all at the same time? (Site 1 )
Plants take the CO2 from the atmosphere which is used in Calvin's cycle to synthesize organic compounds that end up building the plant. This fact can be proved by marking the atmospheric CO2 with radioactive isotopes of carbon, afterwards using a Geiger counter the plant will present radioactivity.
The carbon in the atmosphere is most commonly found in the form of CO2
it has a concentration of 0.04%.CO2 is a byproduct of aerobic respiration
or combustion, for example, C6H12O6+6O2-->6CO2+6H2O. The CO2 is then used by plants in photosynthesis as mentioned earlier.
Carbon is present in the biosphere because all life is made of carbon.
Carbon is present in the geosphere most commonly under the form of hydrocarbons like methane(CH4). The carbon present in geosphere is a result of organisms decay and metabolic byproducts. For example, methanogen bacteria synthesize methane in anaerobic conditions reducing hydrogen in the presence of CO2(CO2+4H2⇒CH4+2H2O). Carbon in the geosphere can also be found in coal that becomes diamond under extreme pressure and temperature.
Carbon element exists in various parts of the atmosphere in the form of gases such as carbon dioxide. The growth of land plants proof that there is carbon in the atmosphere as they perform photosynthesis.
What is Atmospheric carbon?The atmospheric carbon refers to the carbon dioxide which is present in the atmosphere. The main source of this carbon dioxide is respiration in animals.
There is an exchange of carbon from the atmosphere, vegetation, soils and the organic matter of the atmosphere, ocean and fossil fuels all of these are continually changing. The carbon cycle is the cycle through which carbon is exchanged among the various parts of the globe that is the biosphere, geosphere, and atmosphere of the Earth.
The growth of land plants is a proof that there is carbon present in the atmosphere because the land plants use carbon dioxide and water to grow. Carbon dioxide and water are both the gases and important part of the atmosphere, so when they are combined they usually form a liquid. This liquid is then absorbed by the plants and they use it to make their own food through photosynthesis.
Learn more about Atmospheric carbon here:
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the main respiratory surface in man is; Select one: A. alveolar wall B. internal nostrils C. bronchial wall D. tracheal wall
Answer:
answer is alveolar wall
Answer:
Option A
Explanation:
Alveolar Wall forms the main respiratory surface where exchange of gass happens.
Functions of: [A] nucleolus [B] plasma membrane.
Answer:
The nucleolus is considered as the brain of the nucleus. It occupies around 25% of the volume of the nucleus. It is mainly involved in the production of subunits which then together form ribosomes. Therefore, nucleolus plays an important role in protein synthesis and the production of ribosomes in eukaryotic cells.
The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
Explanation:
Adrian caught a virus while staying with his grandmother. A few years later, his mother and sister got the same virus. This virus could spread through touch and direct contact. However, Adrian did not contract the virus this time, even though he was living with his mother and sister. Why did he not get sick? Adrian’s adaptive immunity remembered the antigens from the virus and gave him lifelong immunity to it. Adrian’s innate
Answer:
Adrian's adaptive immune system remembered the antigens from the virus. so he becomes immune to it.
Explanation:
Answer:
Adrian’s adaptive immunity remembered the antigens from the virus and gave him lifelong immunity to it.
Adrian’s adaptive immunity produced a higher amount of specific antibodies for the antigen, preventing the virus.
Explanation:
Which is not likely to be studied by a biologist?
Answer:
there are many things that are not studied by biologist such as physics, figuring out new elements
Explanation:
biologists are people that study peoples life
Answer:
clouds
Explanation:
Which statement describes gravity?
There is no defined unit of measurement for gravity.
O Gravity is the force that pulls objects toward Earth's center.
Objects that have a small mass will have no gravitational pull.
Gravitational pull between two objects decreases as the mass of one increases.
Answer:
Gravity is the force that pulls objects toward the Earths centre
Explanation:
Answer:
O gravity is the force that pulls object towards Earths centre.
Explanation:
Importance of freezing stem cells in South Africa?
Answer:
Stem cells are special cells found in the human body which has the ability to change into different cell types and functions.
They are expensive in South Africa and are freezing the stem cells helps in the preservation of the cells for research works in the medicine. They are also used in the treatment of different illnesses which requires cells and tissue transplants.
c. After about half an hour, what
change, if any, would
you
expect to find in the cobalt
chloride paper placed on the
dorsal and ventral surfaces
of the leaf? Give a reason to
support your answer.
Answer:
It would melt
Explanation:
Because of the chemical
n
Which words and phrases in the sonnet indicate that the
tone is satirical? Select two options.
Albo
"My mistress"
"black wires"
"damask'd"
Read Shakespeare's "Sonnet 130."
My mistress' eyes are nothing like the sun;
Coral is far more red, than her lips red:
If snow be white, why then her breasts are dun;
If hairs be wires, black wires grow on her head.
I have seen roses damask'd, red and white,
But no such roses seel in her cheeks;
And in some perfumes is there more delight
Than in the breath that from my mistress reeks.
I love to hear her speak, yet well I know
That music hath a far more pleasing sound:
I grant I never saw a goddess go,
My mistress, when she walks, treads on the ground:
And yet by heaven, I think my love as rare,
As any she belied with false compare.
O "reeks"
"false compare"
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Mark this and retum
which words in the sonnet indicate that the tone is satirical ?
Answer:
"black wires"
"reeks".
Explanation:
William Shakespeare's "Sonnet 130" is a satire or mocking critique of the conventional sonnets that writers write. In this sonnet, he talks of a young lady who is short of conventional beauty ideals.
In the given lines from the sonnet, the poet/ speaker talks of his mistress whose "eyes are nothing like the sun" and he keeps on describing her features as opposed to one praising his lover. Rather, the speaker in this sonnet uses the negative descriptions in describing his mistress, like calling her hair "black wires" and her breath "reeks", far from the delightful perfumes that a lady is supposed to exude.
Thus, the two words that have a satirical tone in the sonnet are "black wires" and "reeks".
Answer: “black wires” and “reeks”
Explanation:
correct on edge 2020
The lock-and-key analogy is used to describe the Group of answer choices binding of G proteins to transmitter receptors. activation of the nerve impulse. action of transmitter molecules on receptor proteins. degradation of transmitter molecules by enzymes.
Answer:
The correct option is the degradation of the transmitter molecules by enzymes.
Explanation:
The key lock system is a type of enzymatic catalysis / anabolization, and is so called because the enzyme that reacts with its substrate is in the male-female or key lock format.
Enzymes can also react by other mechanisms, but this is known for the perfect fit of the substrate with the binding site, since one represents the negative of the other, once joined and the reaction started, the active site is occupied and the enzyme is not reacts with another substrate simultaneously to that one.
Continue adding new species to your volcanic island until you have a successful ecosystem. Drag and Drop the species in order to how they invade the volcanic island. Lichen, Climax community, Bushes, Primary consumers, Pollinators, Moss, Secondary consumers, Trees, Tertiary consumers, Flowers, and Grass
Answer:
The order of arrangement is as follows
Lichen →Grass → Moss → bushes → Flowers → Pollinators → Trees → Primary consumers → Secondary consumers → Tertiary consumers
Explanation:
The type of succession that results in a successful ecosystem where initial soil condition is a volcanic island devoid of life any life form and without a soil formation is that of primary succession and involves the gradual ecosystem growth in a long time duration
Organic activity in primary succession is started by pioneer organic species which develop a community of interacting organisms from their biological activities resulting in the arrival of new species and the continuing development simple initial community into a successful complex ecosystem.
a
11
20
12
13
14
15
16
17
18
Change the stimulus to read: Edward Jenner?'s smallpox inoculation experiment was based on his observation that
dairymaids who had had cowpox did not contract smallpox. How did Jenner form his hypothesis from this observation?
He asked what would happen if he inoculated a person with cowpox fluid and then later with smallpox fluid.
He tested different existing inoculations to see which one was most effective in preventing smallpox.
He observed dairymaids who had contracted cowpox to see whether they became immune to smallpox.
He drew a conclusion about dairymaids who got cowpox becoming immune to getting smallpox.
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Answer: It's A
Explanation:
What is the Hepatic Portal Vein?
Answer: The hepatic portal vein is one of the most important vein that receives blood from the body and transports it into the liver for filtration and processing. This vein is part of the hepatic portal system that receives all of the blood draining from the abdominal digestive tract, as well as from the pancreas, gallbladder, and spleen.
‘Hepatic’ means of or relating to the liver, therefore the hepatic portal vein is a blood vessel that sends nutrient-rich blood from the gastrointestinal tract and spleen to the liver, but also delivers toxins to the liver that will be chemically modified in the proces of detoxication
Answer:
Explanation:
hepatic portal vein is located in the upper right quadrant of the abdomen. It is typically 8 centimeters long in adults. The portal vein is responsible for carrying blood from the GI tract, gallbladder, pancreas, and spleen to the liver.The hepatic portal vein originates behind the neck of the pancreas and is usually formed by the convergence of the superior mesenteric vein and the splenic vein, referred to as the splenic-mesenteric confluence.
I need help pls...
If a man has red-green color blindness, a sex-linked dominant trait, what is a possible genotype of his father? I. XR Y II. Xr Y III. XR XR IV XR Xr A. Only III B. I and III C. I and II D. I, III, and IV
Answer:
C
Explanation:
The possible genotype of his father is [tex]X^RY[/tex] and [tex]X^rY[/tex].
For sex-linked traits, an affected man always inherit the affected allele from the mother. The other chromosome, which is the Y chromosome is always from the father and this confers maleness on individuals.
The father of a man affected for a sex-linked trait can be affected for the same trait or otherwise. It does not have any bearing on the male child since the father only donates the Y chromosome to the male child.
Hence, in this case, the father can either be affected for the same trait ([tex]X^RY[/tex]) or be free from it ([tex]X^rY[/tex]).
The correct option is C.
The nurse is observing a set of new parents to ensure that they are bonding with their newborn. What displayed behavior would indicate that the parents bonding is maladaptive?
Answer:
Neglecting the child
Explanation:
Maldatives behaviors are the behaviors that do not facilitate the parent-infant bonding, meaning that they are those behaviors that are hindering the process. And the best way of removing that is to encourage the behaviors that counter them.
The process of pointing out the responsiveness of the infant is a positive strategy for facilitating parent-infant attachment. Telling the mother that she must pay attention to her infant may be perceived as derogatory and is not
appropriate. Educating the mother in infant care is important; however, pointing out the responsiveness
of her baby is a better tool for facilitating mother-infant attachment. .
what do we call the chemical substances necessary for an organism to sustain life A. energies B. nutrients C. supplements
Answer:
B. nutrients
Explanation:
Nutrients are chemicals present in all living things on Earth. They are essential for the lives of humans, plants, animals ,and all other species. Nutrients help remove food that provides energy to the species. Carbon, hydrogen and oxygen are the most essential nutrients which they need.
Hence, option B is correct as it is necessary for sustain the life of an organism
Answer: B.
Explanation: Nutrients are chemical substances found in every living thing on Earth. They are necessary to the lives of people, plants, animals, and all other organisms. Nutrients help break down food to give organisms energy. The most important nutrients they need are carbon, hydrogen, and oxygen.
Which best describes the scientific process?
A. A guess about a scientific idea
B. A group of scientists
C. A type of mathematics
D. A way to answer scientific questions
SUBMIT
Answer: I thinks it’s a. A guess about a scientific idea
Explanation:
Which correctly lists three main causes of deforestation?
A.) air pollution, mining, logging
B.) mining, cattle ranching, logging
C.) cattle ranching, water pollution, air pollution
D.) water pollution, logging, mining
Answer:
B
Explanation:
Took the test 2021
The theory of plate tectonics helps to explain _____.
Which of the following shows steps that happen to the chromosomes in Meiosis in the correct order?
Answer:
Since cell division occurs twice during meiosis, one starting cell can produce four gametes (eggs or sperm). In each round of division, cells go through four stages: prophase, metaphase, anaphase, and telophase.
Use this link to read about the tundra biome, then answer the question provided. Describe animal interactions that affect populations in the tundra ecosystem.
Answer:
Animals that are interact in tundra ecosystem are Owls, foxes, wolves, polar bears, caribou, lemmings, and hares.
Explanation:
Animals that are found in tundra ecosystem have some special adaptation to survive the extreme cool temperature. this ecosystem consist of producer, herbivores and carnivores. Owls, foxes, wolves, and polar bears are carnivores which are present in low population while caribou, lemmings, and hares are herbivores which present in large number. These herbivores are the food of carnivores. And these herbivores feed on grasses present in tundra ecosystem.
Answer:
Animals have adapted to the harsh weather conditions and long winters of the tundra.
Animals migrate to eat insects that live there year round.
Many animals in the tundra hibernate during the long, cold winter months.
Animals are most active in the short summer as the snow melts and shallow wetlands form.
Explanation:
lant cells can synthesize energy-rich organic molecules, and later break them down to extract that energy for performing life processes where does it occur?.
Answer:
Two processes were described in this question, hence, the location of the two processes are as follows:
synthesize energy-rich organic molecules- CHLOROPLAST
Break them down to extract energy- MITOCHONDRIA
Explanation:
Plant cells are unique cells capable of synthesizing their own food via a process called PHOTOSYNTHESIS. The process of photosynthesis, which occurs in an organnelle called CHLOROPLAST, synthesizes a sugar (glucose), which is an energy-rich organic molecules i.e. it stores energy in its chemical bonds.
However, to harness the usable form of energy stored in the chemical bonds of Glucose, the cells need to break down the glucose molecule. Plant cells break down glucose in a process called CELLULAR RESPIRATION in order to convert the stored energy in Glucose to a usable form called ATP. This extraction of ATP molecule needed for every life process of the plant cell is carried out in another organnelle called MITOCHONDRION.
Which types of measurement are used to describe quantities of heat and temperature ?
Answer:
There are three different systems for measuring heat energy (temperature): Fahrenheit, Celsius, and Kelvin. In scientific measures, it is most common to use either the Kelvin or Celsius scale as a unit of temperature measurement.
Explanation:
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is a general condition when an organism gains or loses one or more chromosomes but not a complete set. 2. is a general condition where complete haploid sets of chromosomes are present. 3. is a loss of one chromosome from an otherwise diploid genome. 4. is a gain of one chromosome in addition to an otherwise diploid genome. 5. is a trisomy of chromosome 13 in humans. 6. is a trisomy of chromosome 18 in humans. 7. is the addition of one or more extra sets of chromosomes, identical to the normal haploid complement of the same species. 8. is the case of polyploidy when the chromosomes originate from the hybridization of two different species, usually closely related.
Answer:
The correct term for each description s given below:
Explanation:
1. aneuploidy - is a general condition when an organism gains or loses one or more chromosomes but not a complete set.
2. Euploidy - is a general condition where complete haploid sets of chromosomes are present.
3. Monosomy- is a loss of one chromosome from an otherwise diploid genome.
4. Trisomy- is a gain of one chromosome in addition to an otherwise diploid genome.
5. Patau syndrome -is a trisomy of chromosome 13 in humans.
6. Edwards syndrome -is a trisomy of chromosome 18 in humans.
7. autopolyploidy -is the addition of one or more extra sets of chromosomes, identical to the normal haploid complement of the same species.
8. allopolyploidy - is the case of polyploidy when the chromosomes originate from the hybridization of two different species, usually closely related.
Which statement is an example of a scientific theory? A. The Earth is the third planet from the Sun and has one moon, which orbits the Earth. B. Hummingbirds do not like the color white because they visit other colored flowers more often. C. All living organisms are composed of one or more cells, which came from pre-existing cells. D. The amount that caffeine affects a person's heart rate differs based on the person's age.
Answer:
D: The amount that caffeine affects a person's heart rate differs based on the person's age.
What must happen before mistosis can being?
Answer:
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells
Answer:
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.
Aside from being a good marksman, what is the key to making a clean kill?
A
luck
B
patience
C
range
D
weather
Answer:
C. range
Explanation:
Being a good marksman requires a very good range of whatever target you intends to shoot.
Which equation has water as a product in the chemical reaction?
Answer:
What are the options? If I had to guess NaOH+H2 Na+H2O
Explanation:
Answer:
B. NaOH + -> Na + H2O
Explanation:
How are Dobzhansky and Mayr's ideas about the origin of species similar to Darwin’s?
Answer:
evolution of new species is linked to environmental changes
Explanation:
might help