Answer:
Fire. Fire is one of the most common causes of secondary succession and is an important component for the renewal and vitality of many types of ecosystem.
Harvesting, Logging and Abandonment of Crop Land.
Explanation:
1- After a fire, species start to recolonize an area, beginning the secondary succession process. The first species to colonize are usually fast growing herbaceous plants, such as conifers or ferns, which require high levels of light. These species are often already present in the form of seeds within the soil, or are able to rapidly disperse from nearby areas. In time, slow growing, shade-tolerant, woody species begin to suppress the early successional species, which are in-turn replaced or shaded by large trees, eventually leading to the generation of forests and a climax community.
2- The abandonment of land previously utilized for crops is a common cause of human-induced secondary succession. Land which has been intensively cultivated is often nutrient poor, with the nutrients having been repeatedly removed through harvest or logging. Agricultural processes also often leave the soil vulnerable to high levels of erosion. The abandonment of such land allows plants and animals that were previously unable to inhabit the area to colonize. Early succession of vegetation following the abandonment of farmland is responsible for increases in soil organic content, nutrient density and soil porosity. The addition of shrubs and of root systems within the soils, which follow in later succession, acts as a natural barrier against erosion, thereby allowing for restoration of degraded habitats.
Secondary succession is a type of ecological succession in which plants and animals recolonize a habitat following a significant disturbance, such as a devastating flood, wildfire, landslide, lava flow, or human activity.
Thus, Primary succession, in which a biological community emerges where none previously existed, is distinguished from secondary succession.
Where a disturbance did not completely wipe out all life and nutrients from the environment, secondary succession occurs.
Despite the fact that fire, flooding, and other disturbances can leave a landscape in ruins, drive many animals and plants away, and bring the biological community back to an earlier stage, the habitat is still alive because the soil still contains nutrients and seeds that were sown before the disturbance and animals.
Thus, Secondary succession is a type of ecological succession in which plants and animals recolonize a habitat following a significant disturbance, such as a devastating flood, wildfire, landslide, lava flow, or human activity.
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Why are stem cells important for the development of a multicellular organism? What do they allow the organism to do?
Answer:
Stem cells are primal cells found in all multi-cellular organisms. They retain the ability to renew themselves through mitotic cell division and can differentiate into a diverse range of specialized cell types.
Explanation:
In adult organisms, stem cells and progenitor cells act as a repair system for the body, replenishing specialized cells.
What do the arrows in a food chain represent?
Answer:
Hey mate......
Explanation:
This is ur answer......
Arrows on a food chain, or food web, represent the flow of energy. The placement of the arrows in a food chain or food web is very important. The arrows always show the direction of the energy as it is transferred from one organism to another.
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How does the temp of water effect how long a glow stick will glow for?
what is the test variable and the outcome variable?
What makes up the "rungs" of DNA?
Answer:
combinations of the atoms form the four bases: thymine (T), adenine (A), cytosine (C), and guanine (G).
Explanation:
Helped by none other than the #Queen herself.
What are the SIX parts of a DNA molecule?\
Answer:
DNA is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine)
Explanation:
.
My gardener removed all the flowers from my tulip plants. This will interfere with which system of the tulip plant?
vascular system
anchorage system
reproductive system
excretory system
Answer:
reproductive system
Explanation:
The flower of any plant is the reproductive unit of that plant. On other words, it is the part responsible for sexually propagating that plant. The flower of a plant contains the male and female reproductive organs i.e. pollen and ovary. Therefore, Flowers are integral parts of the reproductive system in plants.
According to this question, a gardener removes all the flowers from tulip (
[PLATO] Drag the tiles to the correct boxes to complete the pairs.
Match the correct type of job to its description.
1. nutritionist
2. food production supervisor
3. golf course superintendent
4. horticulturist
1a. manages clubhouse grounds and landscapes them
2a. assists with the growth, distribution, and selling of plants
3a. advises on selecting healthy meals for a balanced diet
4a. coordinates the manufacturing processes of food
Answer:
Nutritionist- Advises on selecting healthy meals for a balanced diet
Food production supervisor- coordinates the manufacturing processes of food.
golf course superintendent- manages clubhouse ground and landscapes them
horticulturist- assists with the growing, distribution, and selling of plants.
Explanation:
i got a 100
a transcribed strand of mRNA has the sequence of UACGA what was the DNA sequence and where does the mRNA need to go next
Answer:
f
Explanation:
f
Answer:
ATGCT, mRNA needs to go out of the nucleus to the cytoplasm to bind to a ribosome.
Explanation:
mRNA strand: UACGA
complementary strand (DNA): ATGCT
in DNA & RNA:
C = G
in DNA:
A = T
in RNA:
A = U
( DNA nitrogen bases: A, T, C, G ..... RNA nitrogen bases: A, U, C, G)
and you better review protein synthesis to know more about mRNA
Stay curious!!
Some areas of the world suffer from increased air pollution because they are surrounded by mountains which can trap
warm air above cold air during certain times of the year. What is this known as?
a. A temperature inversion
b. A grasshopper effect
c. Buffer zones
d. AVOC cloud
e.Industrial Ozone smog
2
Which of the following traits is encoded in your DNA?
A
Your personality
B
Your likes and dislikes
C
Your intelligence
D
Your eye color
Answer:
D
Explanation:
it's your eye color because DNA makes up the genetic aspects of you. The other choices are something you can choose to improve or change.
Eye color trait is encoded in the DNA. So, the correct option is D.
What are Traits?A phenotypic trait is defined as a clear, observable and measurable characteristic of an organism that is the expression of genes in an observable manner. An example of a phenotypic trait is a specific hair color or eye color.
This is described as a distinctive characteristic of an individual that can be determined by genes, environmental factors, or a combination of both. Characteristics can be qualitative for example, as eye color) or quantitative for example, height or blood pressure.
Thus, Eye color trait is encoded in the DNA. So, the correct option is D.
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What kind of bond holds the sugar-phosphate backbone of DNA together?
Answer: Covalent bonds or phosphodiester bonds.
Explanation:
Bases are held together by hydrogen bonds, and the DNA backbone is held together by phosphodiester bonds.
Which of the following statements correctly summarizes the process of photosynthesis?
A. Reactions and the Calvin Benson cycle of the grana release oxygen into the atmosphere.
B. Light dependent reactions convert CO2 to carbohydrates, which light independent reactions use to produce NADPH2 and ATP.
C. CO2 is converted to carbohydrates through reactions fueled by products from the light independent reactions.
D. Reactions in the thylakoids capture free energy from sunlight and use it to convert glucose and oxygen to water and carbon dioxide.
The correct statement would be 'CO2 is converted to carbohydrates through reactions fueled by-products from the light DEPENDENT reactions'. Photosynthesis produces simple carbohydrates.
What is photosynthesis?Photosynthesis is a series of chemical reactions by which plants can produce simple carbohydrates by using the energy from the sun and carbon dioxide.
Photosynthesis has two types of reactions: light-dependent reactions and light-independent reactions.
Light-dependent reactions produce energy (mainly in the form of ATP), whereas light-independent reactions produce carbohydrates (i.e., glucose).
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Which pair of terms could apply to the same organism?
Select one:
A. producer and omnivore
B. carnivore and producer
C. scavenger and herbivore
D. consumer and carnivore
Answer:A
Explanation:
Producer and omnivore
An unidentified element melt at -7-2 c and boils at 58C. What is its physical state at room temperature
Which would be true of sexual reproduction?
a
increases survival rate
b
involves one parent
c
increases genetic diversity
d
produces identical offspring
Answer:
c increases genetic diversity
Explanation:
Answer:
C. increases genetic diversity
Explanation:
First, by process of elimination: sexual production doesn't necessarily increase survival rate, it can, but not always. Sexual reproduction involves two parents, so b is wrong. And sexual reproduction doesn't produce identical offspring, because it's mixing the genes from both parents, do d is wrong. That only leaves c, with two parents, the gene pool is always expanding, and with less chance of mutation
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PLEASE HELP!!!!!!!!!!!!!!!!!
Answer: research it? i dont know
Explanation:
fax about blue eyes i don't mind two BRAINLES
Answer:
People with blue eyes tend to have greater light sensitivity. Night vision is often better among people with blue eyes. A genetic mutation is responsible for blue eyes. People with blue eyes are more likely to have red eye in photos.
What is a mutagen?
A. A way to test for chromosomal mutations
B. A type of mutation involving chromosomes
C. An environmental agent that changes DNA
D. A mutation that is inherited from parents
The answer to the question is that Mutagen is an environmental agent that changes DNA.
Types of Mutagens:
Physical mutagens: Ionising radiation, such as X-rays, gamma rays, and alpha particles, is one example. UV radiations can also act as possible mutagens.Chemical mutagens: Mutagens include arsenic, nickel, and chromium. Some organic chemicals, such as benzene, are also mutagenic in nature.Biological mutagens: Transposonas and viruses are two examples of biological mutagens. Furthermore, some bacteria, such as Helicobacter pylori, have been linked to an increased risk of stomach cancer.Thus we can conclude that A mutagen is a physical or chemical substance that permanently alters genetic material in an organism, generally DNA, increasing the incidence of mutations over the natural background level.
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Please help! Explain how the health of cells in your lungs could affect the health of the rest of your body.
Answer:
When the health of cells in your lungs will bad then the lungs will not able to perform it's function which is Respiration, and it will cause lack of oxygen in our body and after this , it will affect the health of the rest of your body
Giraffes with physical differences belonging to the SAME species is an example of A: Mutation or B: Variation
Answer:
Variation
Explanation:
there are multiple different types of species.
***8 Points*** Two copies of a ______ allele are needed to produce a trait.
What are the sources of the energy that drives the earth’s processes?
Select one:
A. The sun and the earth’s interior.
B. The sun and chemical reactions.
C. The earth’s interior and chemical reactions.
D. The earth’s interior and gravity.
Answer:
Most of the energy in the Earth system comes from just a few sources: solar energy, gravity, radioactive decay, and the rotation of the Earth. Solar energy drives many surface processes such as winds, currents, the hydrologic cycle, and the overall climate system.
Explanation:
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Answer:
Power has to travel a long distance over power lines to reach cities. Because there is no power plants.
Explanation:
Please tell me if I am wrong! good luck!
Answer:
It is expensive because of the pole and the generator you would have to build.
Explanation:
Please anyone help please please help ASAP ASAP please
Answer:
radiant to electrical
Explanation:
State TWO reasons how bacteria can be useful to humans,
Answer: Creating products, such as ethanol and enzymes.
Making drugs, such as antibiotics and vaccines.
Making biogas, such as methane.
Cleaning up oil spills and toxic wastes. Bacteria have long been used by humans to create food products such as cheese, yoghurt, pickles, soy sauce and vinegar. We are also able to use bacteria to break down our sewage and to clean up oil spills.
Explanation:
Answer:
They help to digest substances that the human body cannot break down, like many carbohydrates and things called short chain fatty acids. Friendly bacteria give you protection from the microorganisms that could cause serious illness.
Explanation:
Any one please help ASAP no links please
Answer:
The net force on the vehicle is 1534
Explanation:
I am not always accurate but I hope this helps!
Organisms that eat other organisms are called __________.
Answer:
Heterotrophs Or Consumers
Answer:
heterotrophs
Explanation:
QUESTION 11
Something has happened in Susie's body to cause a mild case of metabolic acidosis. In an effort to maintain her rate of pulmonary ventilation to help raise her pH?
a. The rate of pulmonary ventilation does not have a significant effect on blood pH.
b. It should decrease.
c. It should increase.
where is this ecoregion located?
Answer:
South Texas rather this answer, sorry if not, but I remember that this is the answer
Relative to the length of time life has been on Earth, have modern humans appeared recently or in the distant past?
pLeAsE HeLp Me...
Answer:
recently
Explanation:
earth has had like for billions of years
humans have been here for hundreds of thousands
so to put it simply humans have been here for like 1/10000 of earths lifetime and that's very inaccurate but ik just making a point
In this exercise we have to explain why human beings are considered recent in relation to the time of the earth, so we can say that;
taking into account that the earth is 4.5 billion years old and human beings only existed for approximately 200 thousand years, we can say that we are extremely recent.
How old is a human being on Earth?Anatomically modern humans have their first fossil record in Africa, about 195,000 years ago, and molecular biology studies provide evidence that the approximate time of the common ancestral divergence of all modern human populations will have been 200,000 years ago.
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