Answer:
By altering one of these regions, a variant (also known as a mutation) in noncoding DNA can turn on a gene and cause a protein to be produced in the wrong place or at the wrong time. Alternatively, a variant can reduce or eliminate the production of an important protein when it is needed.
Explanation:
2.4 State two reasons why the fern plants are able to
greater heights than the moss plants.
(2)
Coll
19)what is an underground stem
Answer:
Explanation:
This is because ferns are vascular plants i.e they have vascular tissues which are xylem and phloems which help to conduct water and nutrients while mosses are non vascular plants.
2. Ferns sporophytes are differentiated into true leaves, stems and true roots while mosses lack true roots, stems and leaves.
Underground stems are modified part of plants that are derived from stem tissues which grow under the ground. Underground stems grow beneath the soil. Examples include Rhizomes, ginger, tubers e t.c.
What is an electromagnetic wave?
Please helppp
The answer to your question is C
how would an increase in oxygen affect cellular respiration?
Answer: During aerobic cellular respiration, glucose reacts with oxygen, forming ATP that can be used by the cell. Carbon dioxide and water are created as byproducts. In cellular respiration, glucose and oxygen react to form ATP. Water and carbon dioxide are released as byproducts.
Explanation:
THIS OF THAT
1. Every fifth contour line is darkened. These lines are
called
(A) index contours
(B) elevation
contours
2
A closed loop on a topographic map indicates a
(C) pond
(D)mountain
3. A contour line forms a "v" as it crosses a river. The point
of the "V" always points
(F) downhill
(G) uphill
4. A gentle slope is indicated by contour lines that are
(H) farther apart
I) closer together
(A) 100 meters
(B) 120 meters
5. What is the elevation
change from Y to X?
500
Y
440
Contour interval: 20 m
Answer:
1) index countouts
2) mountain
3) up hills
4) 100 meters
5)
2. Why can't sea stars live in terrestrial environments?
Due to lack of certain features, sea stars can't live in land environment.
Why can't sea stars live in terrestrial environments?Sea stars can not live in terrestrial environments because of the body structure which is fit for water not land environment. Every organism has special features that allows it to live and survive in that specific environment.
So we can conclude that due to lack of certain features, sea stars can't live in land environment.
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Most successful parasites, such as a cat flea, weaken their host but do not kill it. Why is killing its host usually disadvantageous for a parasite?
Question 4 options:
Relatives of the host would then attack the parasites.
Lysosomes from the host would then attack the parasite.
If a parasite kills its host, it will then have to find a new host in order to survive.
Parasitism is a relationship where both organisms benefit; killing the host is not beneficial to the host.
Answer:
The correct answer is - If a parasite kills its host, it will then have to find a new host in order to survive.
Explanation:
Parasites are organisms that depend on other organisms for their food and energy in order to survive. The organism that they depend on is called their host. In this only parasites get benefitted while hosts are harmed.
Although parasites harm their hosts, parasites tend to not kill the host as its best for them so they do not have to find another host and again establish control on the host's body and body functions, for their survival.
Chromosomes are
A: DNA strands that become visible during cell division
B: the control centers of cells
C: the thick, fluid material surrounding the nucleus
D: the basic units of structure in living things
Answer:
A
Explanation:
Each chromosome contains a single double-stranded piece of DNA along with the aforementioned packaging proteins. Chromatin condensation begins during prophase and chromosomes become visible. Chromosomes remain condensed throughout the various stages of mitosis
hope this helps
Cells cannot grow forever. Rather than just die, what do you think they do when they get too big?
Answer:
Well they grow up to a certain limit, so they divide into smaller cells. they do that because if the cell grows really big and it would be more difficult to get sufficient amounts of oxygen and nutrients in and waste products out, so the cell has to stop growing before this happens.
Explanation:
Which correctly pairs this structure with
what its made from?
A. Chromosome: DNA & Protein
B. Centriole: DNA & Protein
C. Centromere: Protein & Fat
D. Centriole: DNA & Sugar
Answer:B. Centriole: DNA & Protein
Explanation:
Answer:
B.
Explanation:
sorry if I'm wrong......
Carbon ______________ are processes that add carbon to the atmosphere. Carbon ______________ are processes that absorb carbon
Answer:
Carbon sources
Carbon sequestration
Explanation:
Carbon sources are regions that produces atmospheric carbon dioxide. This carbon dioxide is naturally added to the atmosphere when organisms respire, decompose, rocks with carbonate are weathered and volcanoes erupt.
Carbon sequestration is the process of taken and storing atmospheric carbon dioxide. The method helps in reducing the amount of carbon dioxide in the atmosphere which in turn reduces global climate change.
Describe short-term change.
Answer: very fast environmental changes that affect organisms quickly
Explanation:
What are Life processes?
Answer:
the process which includes as growth, differentiation, respiration, digestion, and excretion during their life time is life process.
Answer:
Growth, differentiation, respiration, digestion, and excretion are life processes.
Hope this helps!
What effects do genetic mutations have on the survival of a species?
Will using Whole Milk instead of using low
fat milk make a difference in making cheese? if so,
how?
Answer:
Yes there will be a slight difference in texture but ultimately it is a acceptable substitution. Just make sure to look at the recipe. It depends on how much fat and moisture that milk is contributing to the overall batter or food
Which is NOT a function of the stem in plants?
A. Store water
B. Carry nutrients
C. Provide support to the plant
D. Anchor the plant in the ground
Answer:
D.
as roots help plants to be stable in ground
List one-way mitosis and meiosis are the same and one way they are different.
please help!
Answer: Mitosis and meiosis are alike in that they both are a kind of cell division. They are different in that mitosis produces two cells identical to the original, while meiosis produces cells that only have half the chromosomes of the original. Meiosis ends up with haploid cells, while mitosis endup with diploid cells.
Explanation:
someone please help
Model the reflection of a light wave.
1.
Choose a material that will reflect light.
2.
Create a diagram that represents a light wave being reflected.
3. Label your diagram "Light Wave Reflected."
4. Below the diagram, write a brief description of the interaction between the wave and the
material. Be sure to discuss the angle of incidence, the angle of reflection and the normal.
Also explain how the amplitude and frequency of the wave are affected.
When waves of light (and other electromagnetic radiation) come into contact with a surface or other boundary that does not absorb the radiation's energy, the waves bounce off the surface and back into space.
What is Light wave?The simplest instance of visible light reflection is a smooth pool of water's surface, where incident light is orderedly reflected to provide a clear image of the landscape around the pool.
When you throw a rock into a pool, it disturbs the water and causes waves, which prevent reflection by spreading the light rays in all directions.
The incoming light wave is referred to as an incident wave, and the wave that is bounced away from the surface is termed the reflected wave. Visible white light that is directed onto the surface of a mirror at an angle (incident) is reflected back into space by the mirror surface at another angle (reflected) that is equal to the incident angle, as presented for the action of a beam of light from a flashlight on a smooth.
Therefore, When waves of light (and other electromagnetic radiation) come into contact with a surface or other boundary that does not absorb the radiation's energy, the waves bounce off the surface and back into space.
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What inference can be made from the phylogenetic tree?
Choose 1 answer:
Species A was probably much larger than any of the other organisms.
B
Species G is extinct.
С
Species F and G are more closely related than species B and E.
Species C is the most recent common ancestor of species B and D.
Inference from phylogenic tree is:
Species A was probably much larger than any of the other organisms.
What is phylogenic tree?
A phylogenetic tree, also known as a phylogeny, is a diagram that depicts the lines of evolutionary descent of different species, organisms, or genes from a common ancestor.
What can phylogenetic trees tell us?
A phylogenetic tree can help trace a species back through evolutionary history, down the branches of the tree, and locate their common ancestry along the way.
Hence ,option A is correct
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what are 8 possible blood types
Answer:
A+ ,A-,B+,B-,O+,O-,AB+,AB-
The theory of natural selection occurs in 4 steps. Overproduction, Variation,
Selection, and what else?
Drag each technology to the correct location on the table. This map shows three areas that are prone to natural hazards. Match each technology the area most likely to find it helpful.
Answer:
1. What do you mean by Multiple Hazard Mapping (MHM)? (2 marks). 2. ... How are the information to be compiled for Multiple Hazard Mapping (MHM) (5 marks). 9. ... When an area is exposed to more than one hazard, a Multiple Hazard Map (MHM) helps the planning team to analyze all of them for vulnerability and risk.
Explanation:
Answer:
Florida is close to the Atlantic Ocean, so it is prone to hurricanes. Technologies that can help Florida include hurricane shutters for windows and satellites that detect air movement over the ocean. Kansas is landlocked and is in the infamous Tornado Alley. The Warn-on-Forecast tool and safe rooms built in basements would be useful in this area. California is close to the Pacific Ocean and regularly suffers from drought. Water conservation devices and desalinization plants would be helpful in this region.
Explanation:
I'll give brainiest if correct
Answer:
Peak: -20 C
Mid-Level: -9 C
Sea-Level: 12 C
Explanation:
The higher up you go, the colder it is. This is because cold air drifts above warm air.
No Problem, please mark me as Brainliest if you will.
Answer:
i can be completely wrong but i think -9C would go at the top -20C would go in the middle and 12C at the bottom then again where im from we dont really do C so i can be completely wrong sorry if i am
Thank you to anyone who answers .
Answer:
I think C
Explanation:
Not 100% sure
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As the nutritional energy passes through the food chain, energy......
O a) is gained
b) decreases
c) remains constant
d) increases, then decreases
Answer:
B. Decreases
Explanation:
In an ideal food chain, nutritional energy from producers (plants) are transfered to other animals at different levels on the food chain. As nutritional level is being passed from one level to another, most of the nutritional energy is lost in the process. Therefore, energy decreases as the nutritional energy passes through the food chain.
Atoms of carbon-14 are radioactive. They decay into atoms of the element nitrogen. Suppose that a sample of rock is taken from a fossil. The sample has 1000 atoms of carbon-14 and 1000 atoms of nitrogen.
If carbon-14 has a half-life of 57-- years, how old is the fossil?
A. 11,400 years old
B. 5700 years old
C. 2850 years old
D. 17,100 years old.
The half life of carbon -14 is 5730 years. The carbon -14 undergoes decays to form nitrogen -14. 1000 atoms of nitrogen is formed from 1000 atoms of carbon. Hence carbon -14 decayed from 2000 atoms to 1000. Therefore it is decayed by one half life and the age of the sample is about 5700 years or more accurately 5730 years.
What is radioactive decay?Unstable radioactive isotopes of atoms undergo spontaneous nuclear decay by the emission of charged particles such as alpha or beta. The time required to decay half of the initial amount of the isotope is called half life.
Carbon -14 undergo beta decay and the nuclear reaction is given as follows:
[tex]\rm _{6} ^{14}C \rightarrow _{7}^{14}N + _{-1}^{0}e[/tex]
Thus, one carbon atom is converted one nitrogen atom. Hence, 1000 nitrogen atoms are formed from 1000 carbon atoms. The remaining number of carbon atoms in the rock sample is 1000. Thus, the initial amount was 2000.
The half life of carbon -14 is about 5700 years. Hence, it takes 5700 years to decay from 2000 to 1000 atoms. Therefore, option B is correct.
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how is making stuff with mud is science?? someone plss helpp plss
Answer:
Making stuff with mud is science because these are experiments used to establish facts and principles about mud and/or the different types of soil constituting the mud
Explanation:
Science is a discipline that studies the establishment of facts, principles and methods through experimentation and instills processes of investigations to learners. Making stuff with mud can be used to establish facts and principles e.g clay soil has smooth and fine particles and has high adhesive forces of attraction with water and hence will make longer and thinner ribbons while sand has large rough particles which make large and chubby (I couldn't think of another word) ribbons due to the weak adhesive forces between the particles and water.
HOPE THIS HELPS !!! :)
describe the flow of blood (ex. from the body, to the body, from lungs to lungs) and name the chambers of the heart and other important parts.
Answer:
Once blood travels through the pulmonic valve, it enters your lungs. This is called the pulmonary circulation. From your pulmonic valve, blood travels to the pulmonary arteries and eventually to tiny capillary vessels in the lungs
Explanation:
Once blood travels through the pulmonic valve, it enters your lungs. This is called the pulmonary circulation. From your pulmonic valve, blood travels to the pulmonary arteries and eventually to tiny capillary vessels in the lungs
How Jackrabbit controls his body temperature through his capillaries?
True or false: Predators of one species can never be prey to another species.
A. True
B. False
3benefits of including roughages in the diet of humans