Answer:
The air masses separated by a front usually differ in temperature and humidity. Cold fronts may feature narrow bands of thunderstorms and severe weather, and may on occasion be preceded by squall lines or dry lines. Warm fronts are usually preceded by stratiform precipitation and fog.
why does the temp of the air increase with the height of the stratosphere?
Answer:
The hot air rises and the cool air falls
Explanation:
The freezing point of a mixture of water and salt is
A. higher than that of pure water
B. the same as that of pure water
C. lower than that of pure water
D. none of the above
Answer:
lower
Explanation:
salt makes thing freeze faster
Answer:
A
Explanation:
Because when you mix a mixture and pure substances it’s higher
Which of the following statements about plankton or nekton is NOT correct?
a. Nekton are active swimmers.
b. Phytoplankton are important primary producers.
c. All plankton are closely related to plants.
d. Plankton drift or swim weakly.
e. Zooplankton are heterotrophic plankton.
Answer:
B is the answer
Explanation:
plants make their own food and in this case phytoplankton aslo plankton are known as plants
When the northern hemisphere points toward the sun, the southern hemisphere faces away from the sun. In this instance, it is:
A.
summer in North America, and winter in Australia.
B.
summer in North America and Australia.
C.
winter in North America, and summer in Australia.
Answer:
A
Explanation:
the northern hemisphere is the opposite from the southern hemisphere
Since northern and southern hemisphere are in opposite directions therefore, option (A) is correct.
Why are the seasons reversed in each hemisphere?The axis of rotation of the Earth is inclined with regard to the plane in which it orbits the sun. This is the root reason of the changing of the seasons. When the axis of the earth is aligned with the sun, summer arrives in that hemisphere of the planet. Expect winter to arrive when the axis of the earth is tilted away from the sun.
Different places of Earth receive the Sun's most direct rays throughout the year. When the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. When the South Pole tilts toward the Sun, the Northern Hemisphere experiences winter.
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Which person is collecting data through the participant observation method?
O A. William, who is reviewing the comments people wrote on
questionnaires
B. Dakota, who is calculating the results from a survey
OC. Hosea, who is watching people in their normal suroundings
OD. Brittany, who is reading research done by others
Answer:
C. Hosea, who is watching people in their normal surroundings.
Explanation:
Explain how PHOTOSYNTHESIS works in plants
Answer:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. ... This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.
Explanation:
what is unequal sharing of electrons
Answer:
Covalent bond between two atoms with unequal electronegativities results in unequal sharing of electrons. These types of covalent bonds are called polar bonds because the electron distribution or charge is unevenly distributed or polarized. .
Explanation:
answer 18 and 19 Please help I will mark brainliest
Answer:
18. J.
19. B 23 chromosomes
Answer:
23
Explanation:
answer 18 and 19 Please help I will mark brainliest
students observed several prepared slides of a process that occurs in a dividing onion cell. they observed haploid cells in one slide, centromeres that did not separate during anaphase in another slide, and two different cell divisions resulting in 4 daughter cells in other slides. Which statement is not true about the process that was observed?
1.) the slides were of an egg cell or sperm cell
2.) the process observed produce genetically different cells
3.) the number of chromosomes resulting from the process is reduced by half
4.) the observations suggest cellular reproduction and general growth and repair of the body.
Answer: pretty sure it could be “B”.
Explanation:
Meiosis produces 4 haploid cells -gametes- from a single diploid cell. The statement that is not true is 4). the observations suggest cellular reproduction and general growth and repair of the body.
Observed prepared slides:
haploid cells in one slide.centromeres that did not separate during anaphase in another slide.cell divisions resulting in 4 daughter cells in other slides.
According to this information, we can assume that the students are observing the occurrence of meiosis events.
MeiosisThrough Meiosis, a diploid cell (2n) produces four haploid daughter cells (n). Thes haploid cells are the gametes.
After DNA replication there are two meiotic phases.
The first one is a reductive phase, in which homologous chromosomes separate. In the second phase, the cell suffers a new, not reductive division.1. In the first phase, Meiosis I:
Prophase I: Chromosomes condensate and become visible. Occurs crossing-over between homologous chromosomes. Crossin-over makes the daughter cells to be genetically different from the original one. Metaphase I: Homologous chromosomes randomly align in the equatorial plane. Anaphase I: In this phase occurs the division and independent separation of homologous pairs. Each chromosome migrates to different poles. This separation generates different chromosomal combinations in the daughter cells. Telophase I: Chromosomes of homologous pairs are already in the corresponding poles, and the nuclear membrane forms again in each pole. Cytokinesis occurs.2. In the second phase, Meiosis II:
Prophase II: Chromosomes condensate again and become visible. Metaphase II: Chromosomes join the spindle apparatus and migrate to the equatorial plane, where they randomly line up. Sister chromatids are holden together until they reach the Anaphase. Anaphase II: Centromeres divide, chromatids get separated, and each of them goes forward an opposite cellular pole. Telophase II: Once in the poles, the chromosomes become lax again, and the nuclear membrane forms again. Cytokinesis occurs. Options1.) the slides were of an egg cell or sperm cell ⇒ Correct. It makes reference to gametes -haploid cells-.
2.) the process observed produce genetically different cells ⇒ Correct. After crossing over and independent segregation of chromosomes.
3.) the number of chromosomes resulting from the process is reduced by half ⇒ Correct. After the reductive phase.
4.) the observations suggest cellular reproduction and general growth and repair of the body. ⇒ INCORRECT. Mitosis is in charge of general growth and repair of the body, not meiosis.
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When air has reached its dew point
A) Air has to be cold
B)Air can hold more water
C)Air is saturated
D)Air has low humidity
Answer:
When air has reached the dew-point temperature at a particular pressure, the water vapor in the air is in equilibrium with liquid water, meaning water vapor is condensing at the same rate at which liquid water is evaporating.....
Which describes the number of new infants per one thousand individuals in a
population per year?
A. Birthrate
B. Space availability
C. Carrying capacity
D. Death rate
Answer: a
Explanation:
birth rate
Which level of organization is formed when a group of organs work together to perform complex functions?
Molecule
Organ
Organ system
Tissue
Answer:
Organ system is the correct answer, i took the test and passed.
( trust me ;)
Explanation:
Please give me brainlyest
I hope this helps
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Answer: i think it is the 3rd one but i am not sure
Explanation: hope you pass the exam :)
What type of cell is more likely to replicate and replicate faster brain cell or hair cell
Answer:
hair cells is most likely to replicate faster than the brain cell
Explanation:
__________
the reactants of photosynthesis are
a: organic compounds
b: glucose and sunlight
c: glucose and water
d: glucose and carbon dioxide
e: water and carbon dioxide
Answer:
I think its e
Explanation:
Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants
What is the relationship between a person's PULSE RATE and his or her HEART BEAT? A. The heart beat is always double the pulse rate. B. The heart beat and pulse rate may change, but are always equal. C. The heart beat is always half of the pulse rate. D. There is no relationship between the heart beat and the pulse rate.
Answer:
B. The heart beat and pulse rate may change, but are always equal.
Hope this helps :D Have a fantastic day
Why do carnivorous
plants sometimes "eat" insects and other organisms?
Answer:
Because.they are carnivours ya know
Answer:
Like all plants, carnivorous plants are capable of photosynthesis. Since they usually live in areas where the soil quality is poor, they must supplement their diet with nutrients gained from digesting animals. Like other flowering plants, carnivorous plants use tricks to entice insects.
Explanation:
hope this helps have a good rest of your day/night :)
Weigh 10 grams of sugar and then dissolve in 100 mL of water (2
tools).
Answer:
180 gramsExplanation:
The solubility of sugar would be about 180 (a maximum of 180 grams of sugar can dissolve in 100 milliliters of water at room temperature). When a solvent has dissolved the most solute it is called a saturated solutionYou would need a scale to weigh it and a beaker/test tube to hold the water...
Describe the process of absolute dating as it relates to igneous rock and the fossil record.
Answer:
Radiometric dating. Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks. ... When molten rock cools, forming what are called igneous rocks, radioactive atoms are trapped inside. Afterwards, they decay at a predictable rate.
Is playstatium a mineral?
Moving ions against a concentration gradient requires energy and results 2 points
in uneven concentrations of the ions. ATP powers the pump, allowing it to
create and maintain
of these ions. *
concentration gradients
equilibrium
diffusion
osmosis
Answer:I think osmsis
Explanation:
True or False: Epinephrine enters
the cell after it binds to the receptor.
Epinephrine enters the cell after it binds to the receptor. Yes, this statement is true.
What are the functions of epinephrine?
Adrenaline, also known as epinephrine, is a hormone and medication which is involved in regulating visceral functions. It appears as a white microcrystalline granule.
Epinephrine injection is used for emergency treatment of severe allergic reactions (including anaphylaxis) to insect bites or stings, medicines, foods, or other substances.
Through its action on alpha-1 receptors, epinephrine induces increased vascular smooth muscle contraction, pupillary dilator muscle contraction, and intestinal sphincter muscle contraction.
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Which of the following characteristics of carbon is responsible for the variety of carbon-based molecules on Earth?
Answer:
It can form bonds.
Explanation:
(I'm in ap bio so I know a lot, lol, hope that helps)
which factor makes the enzymes well suited to the role of a catalyst in a biochemical reaction?
1.) do not affect the energy of a reaction
2.) slow down reactions so products can form
3.) can be reused because they do not permanently bond with substrate
4.) can only bind to other enzymes so the same product is formed each time
Answer: Either, B or D
Explanation:
what is not a main principle of the cell theory?
a-cells are the basic unit of structure and function in living things
b-new cells are produced from existing cells
c-all cells enclose their DNA within a nucleus
d-all living things are made of cells
Answer: c not all cells have a nucleus (prokaryotic cells don’t)
Explanation:
Which of the following would most likely be reduced when combined with Al(s)?
Will be giving brainliest
Answer:
A
g
+
- oxidising agent
K
- reducing agent
C
l
2
- oxidising agent
Explanation:
A
g
+
- oxidising agent (most likely form Ag by gaining an electron)
K
- reducing agent (most likely form
K
+
by losing an electron)
C
l
2
- oxidising agent (most likely to form 2
C
l
−
by gaining electrons)
This is based on what is likely, not so much that the above are known to be oxidising or reducing agents.
The most likely option to be reduced when combined with Al(s) is Fe (iron). Therefore option C is correct.
Reduction refers to the gain of electrons by a chemical species. In this case, we are considering the reduction of ions when combined with solid aluminum (Al(s)).
Aluminum (Al) is more reactive than iron (Fe) in terms of its electrochemical properties. When aluminum reacts with certain metal ions, it tends to displace those ions and undergo oxidation itself. This process is known as a displacement or redox reaction.
Fe (iron) is less reactive than aluminum and can be displaced by aluminum in certain redox reactions. Therefore, it is the most likely option to be reduced when combined with Al(s).
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What is mass transport across the cell membrane
(HELP PLEASE I WASNT IN SCHOOL YESTERDAY) All of these forms of energy are involved in the human body's everyday life EXCEPT
Group of answer choices
mechanical energy
thermal energy
nuclear energy
Answer:
I'm pretty sure it's nuclear energy.
Answer:
the answer is the last one hope it helps
The instructions for the traits of an organism are determined by:
the proportions of A, T, C, and G in DNA molecules
the order of nucleotides in DNA molecules
the length of DNA molecules
the way nucleotides are paired in the two strands of a DNA molecule
Answer:
In all organisms, the instructions for specifying the characteristics of the organism are carried in DNA, a large polymer formed from subunits of four kinds (A, G, C, and T). ...
Most of the cells in a human contain two copies of each of 22 different chromosomes. ...
Changes in DNA (mutations) occur spontaneously at low rates.
Are axolotl prokaryotic
Answer:
The axolotl, Ambystoma mexicanum, also known as the Mexican walking fish, is a neotenic salamander related to the tiger salamander. Although colloquially known as a "walking fish", the axolotl is not a fish but an amphibian. The species was originally found in several lakes, such as Lake Xochimilco underlying Mexico City. Axolotls are unusual among amphibians in that they reach adulthood without undergoing metamorphosis. Instead of developing lungs and taking to the land, adults remain aquatic and gilled.
Explanation:
Answer:
prokaryotic
Explanation:
I just took the test!
Which best explains the role of plants in the nitrogen cycle?
Answer:
Assimilation
Explanation:
This is how plants get nitrogen. They absorb nitrates from the soil into their roots. Then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll. ... When a plant or animal dies, decomposers like fungi and bacteria turn the nitrogen back into ammonium so it can reenter the nitrogen cycle.
