Answer:
Los desarrollos científico-tecnológicos han impactado positivamente sobre los sistemas de agricultura ecológica y en última instancia también sobre la agricultura familiar
Explanation:
La agricultura ecológica refiere a los procedimientos de explotación agrícola basados en la utilización sustentable de los recursos de la tierra y los métodos de fertilización orgánica, respetando el ambiente natural y evitando el uso de compuestos químicos artificiales (como por ejemplo plaguicidas químicos) y de cultivos transgénicos. Por otra parte, la agricultura familiar refiere a un tipo de agricultura ecológica basado en la dirección y la administración familiar. La agricultura familiar es el sistema de agricultura predominante en regiones pobres de América Latina y el Caribe, representando aproximadamente el 80 % de la producción agrícola. De este modo, el desarrollo de métodos eficientes de agricultura/ecológica familiar resultan fundamentales para lograr la seguridad alimentaria en la región y también para mitigar los efectos negativos del cambio climático. En este contexto, diferentes avances científico-tecnológicos han impactado positivamente sobre el manejo, eficiencia y productividad de la agricultura familiar como sistema de cultivo no sólo sustentable sino también eficiente, entre los cuales se destacan el desarrollo de mini-invernaderos, variedades mejoradas obtenidas a través de técnicas de mejoramiento genético convencional (selección a campo), trampas artesanales para la captura de insectos plagas, etc. Diferentes tecnologías/metodologías como las anteriormente citadas han sido ajustadas y validadas a partir de procesos de experimentación participativa con el objetivo de estudiar cuales son las condiciones de la zona que mejor se adaptan al tipo de cultivo y de incrementar la productividad de sistemas de cultivos sustentables.
In very dry environments, sand can pile into large dunes.
The wind causes ripples on the surface of the sand.
Fossilized ripples of windblown sand
What do fossilized dunes such as the one shown in the photo tell scientists
about the environment?
A. It was once cold and wet.
B. It used to be a glacier.
C. It used to be an ocean.
OD. It was once dry and windy.
Answer:
D
Explanation:
the picture has ripples and is dry and cracked, hence the envirmoment having to be dry and windy.
Answer:
It was one dry and windy.
Explanation:
What is a reason for peer reriew?
A: to maintain scientific standards
B:to allow anyone to submit research
C:to ensure that science remains elitist
Of the terrestrial planets, Earth and Venus are
Which phrase best completes the sentence?
O about the same size
O different in density
O similar to gas planets
O very different in size
Answer:
A. About the same size
Explanation:
Venus is often named as Earth's twin because both worlds share a similar size, surface composition and have an atmosphere with a complex weather system. Both planets have almost the same size and density.
Hope this helps!
Earth and Venus are about the same size. So, the correct option is (A).
What is Earth?Earth is the third planet from the Sun and the only celestial object known to harbor life. Only Earth maintains liquid surface water in the Solar System. About 71% of Earth's surface is made up of ocean, which dwarfs Earth's polar ice caps, lakes, and rivers.
Earth consists of land, air, water and life where land consists of mountains, valleys and flat areas and air is composed of various gases, mainly nitrogen and oxygen. Water includes oceans, lakes, rivers, streams, rain, snow, and ice.
Venus is known as our sister planet because of the similarity in size, mass, density, and volume that both planets are believed to share a common origin at the same time from a condensed nebula about 4.5 billion years ago.
Thus, Earth and Venus are about the same size. So, the correct option is (A).
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Select all that apply: Meiosis increases diversity in a populations by way of *
Mutation
Independent Assortment
Crossing Over
Random Fertilization
if earth suddenly had no moon, which biome would begin to change immediately and change most?
Answer:
The ocean.
Explanation:
Question 32
2 pts
Which of the following is true about horns and antlers?
Antlers are permanent and are made of hair.
O None of the other answers are correct.
O Horns are shed yearly and are made of hair.
O Antlers are shed yearly and are made of bone.
Horns are shed yearly and are made of bone.
Answer: C
Explanation:
Kinda common knowledge. Reindeer have antlers and they shed yearly
Describe the lysogenic cycle. Write a paragraph. Please don't copy and paste answers. Thank you.
Answer:
The viral DNA is inserted into the DNA of the host during the lysogenic cycle; however, viral genes are not expressed. During each cell division, the prophet is transmitted to daughter cells. The prophet leaves bacterial DNA after some time and passes through the lytic cycle to create more viruses. hope this helps Explanation:
Answer:
I have absolutely no clue
Explanation:
Because i'm a friend and you'll love me anyways Unu
Scientists have observed that the planets closest to the Sun orbit faster than the planets farther away from the Sun. What is responsible for this observation? (help fast)
A
the nuclear energy of the Sun
B
the magnetic field of the planets
C
the gravitational force of the Sun
D
the electrostatic force of the planets
Answer:C
Explanation:Its gravitational force of the sun
In horses, black coloring (B) is dominant, and chestnut coloring (b) is recessive. What percentage of offspring are expected to be chestnut?
Answer:
This question is incomplete, the complete question is as follows:
- In horses, black coloring (B) is dominant, and chestnut coloring (b) is recessive. A homzygous black horse crosses with a chestnut horse.
What percentage of offspring are expected to be chestnut?
The answer is 0%
Explanation:
This question involves a gene coding for color in horses. The allele for black coloring (B) is dominant over the allele for chestnut coloring (b) is recessive.
According to this question, if a homzygous black horse (BB) crosses with a chestnut horse (bb), the following gamete will be produced by each parent;
BB - B only
bb - b only
Using these gametes in a punnet square, the following proportion of offsprings will be produced:
Bb, Bb, Bb, Bb
All of these offsprings are phenotypically black colored although heterozygous in genotype. Hence, 0% of offspring are expected to be chestnut.
Answer:
its 0% love
Explanation:
If a red cow (hom0zygous dominant) is crossed with a white cow (hom0zygous dominant), what alleles will the offspring have?
Rw
RW
rW
rw
Answer:
RW
Explanation:
Captial letters are dominant and because both cows are hom0zygous dominant, the offspring will inherit one white dominant allele and one dominant red allele.
Answer: The answer is B: RW
Explanation: Edge 2021
Which molecule results from the final step of the Calvin cycle
Answer:
RuBP
Explanation:
if im wrong sorry
Dont waste answers Its biology
Answer:
1. The process shown is Biological Process
2. Planting seeds
3. Lichens, mosses, algae etc.
4. Hardwood forest stage
5. 10 - 20 years
Read the following passage from the Biology Department at University of California, Berkeley.
Northern elephant seals have reduced genetic variation because hunting by humans reduced their population size to as few as 20 individuals at the end of the 19th century. Their population has since rebounded to over 30,000, but their genes still carry the marks of this near extinction: they have much less genetic variation than a population of southern elephant seals that was not hunted as intensely.
Which of the following best describes how the population has evolved?
The population has not evolved because there was no change in allele frequencies.
The population has not evolved because it has grown.
The population has evolved because it has grown.
The population has evolved because there was a change in allele frequencies.
Answer:
the last one sorry if i'm wrong
Explanation:
According to the passage from the Biology Department at University of California, Berkeley.Northern elephant seals have reduced genetic variation because hunting by humans reduced their population size to as few as 20 individuals at the end of the 19th century. Their population has since rebounded to over 30,000, but their genes still carry the marks of this near extinction: they have much less genetic variation than a population of southern elephant seals that was not hunted as intensely.
The best option that describes is" the population has not evolved because there was no change in allele frequencies.Thus, option B is correct.
What is population?The term population reffered to the total number of people living in a particular given area.The population of an organism can't survive if it exceeds it's carrying capacity.
The causes that affect population growth animals that if there are more plants than usual in area, populations of animals that eat that plant may increase.
If animal population increases the population that eat that animal might also increase.
The effects of animals population can be dangerous and when population exceed the carrying capacity of their environment, animal suffer of malnutrition and disease.
When predictors became scarce due to over population, the weekar species of animal start or die in other ways .
The accurate description of the growth of a natural animal population is limited by environmental factors.
Therefore,The best option that describes is" the population has not evolved because there was no change in allele frequencies.Thus, option B is correct.
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Explain how carbon cycles through the ecosystem in which you live.
PLEAASE HELP :((
Answer:Carbon moves from living things to the atmosphere. Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants need to get rid of carbon dioxide gas through a process called respiration. Carbon moves from fossil fuels to the atmosphere when fuels are burned. The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms.
Explanation:
The National Wildlife Refuge supports _______ wildlife refuges.
a.
150
b.
37
c.
550
d.
227
Please select the best answer from the choices provided
A
B
C
D
Answer:
answer b is the correct of this question
Fill in the gap to complete the sentence below. A mineral is an essential nutrient that is needed in ____ amounts.
Answer:
Considerate???
Explanation:
You cant have to many minerals and you cant have to little
In the statement, "A mineral is an essential nutrient that is needed in." the given blank can be filled with "small amount."
A mineral is an inorganic solid that forms in nature and has a distinct chemical makeup and crystalline structure.
The body requires trace amounts of minerals in order to function effectively. They play a role in several body processes, such as blood clotting, nerve health, and bone health.
Calcium, iron, magnesium, potassium, and zinc are a few of the essential minerals for human health. Fruits, vegetables, whole grains, dairy products, and other foods that contain these minerals.
Therefore, "Small amount" can be entered in the given blank.
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Use the table to write the phenotypes that would be visible given the different genotypes.
I will mark Brainlist.
Answer:
EE. Large Eyes
oo. Round face shape
Ss. straight hair
CC.normal chin
Cc. normal chin shape
ee. Small eyes
ss. Curly hair
Oo. Oval face shape.
Why are only four amino acids produced by 5 codons? I need this answer ASAP
Answer:
My answer (that the information we have about codon structure is limited to the observations we can make now) is similar to the first part of your answer: that the number of amino acids that can be encoded is a function of codon length, in that both imply the (circular) argument that we must need more than 14 amino acids (plus a start and a stop, making 16) because we observe three nucleotide codons rather than two nucleotide codons. It would be nice to have a noncircular argumentf for why the minimum number of distinct amino acids is more than 14, but that is beyond my ability to construct
A, T, C, and G are the only letters found in DNA, however, a protein may include up to 20 distinct amino acids. Codons assist in translating the DNA code into a protein code at this point.
What are genetic codons?For the body to develop and work effectively, 20 different amino acids are required. All 20 of them are crucial for your health, but only 9 are considered to be absolutely necessary.
This is due to the degeneracy of genetic codes, one of their characteristics, the remaining 3 codons are called "stop" codons since they do not code for any amino acids. The sequences UAA, UAG, and UGA include the stop codon information.
Therefore, only 61 of the 64 possible codon combinations code for amino acids.
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The graph below shows the averaged sunspots from 1610 to 2007. The graph shows sunspot number on the y axis and years 1600, 1650, 1700, 1750, 1800, 1850, 1900, 1950, and 2000 on the x axis. The graph rises and falls in a cyclic order in gaps of approximately 10 years. The number of sunspots observed in 1610 was 40, in 1650 it was 5, in 1700 it was 10, in 1750 it was 90 and the number of sunspots in 1800 was 50. The number of sunspots observed in 1850 was 130 and the number of sunspots in 1900 was 10. The number of sunspots observed in 1950 was 150 and the number of sunspots observed in 2000 was 30. Based on the graph, which of these conclusions is correct? Some of the previously warm regions became colder from 1650 to 1700. Some of the previously cold regions became warmer from 1600 to 1700. Some of the previously warm regions became warmer from 1610 to 1700. Some of the previously cold regions became colder from 1900 to 1950.
Answer: Some of the previously warm regions became colder from 1650 to 1700
Explanation: I got it right on the test
According to the graph, the number of sunspots decreased from 1650 to 1700. That means the correct option is A.
What is a sunspot?The areas of the sun where the magnetic field of the sun is 2500 times more than the Earth. In these areas, the magnetic field is more than anywhere else on the surface of the sun.
Near the area of a sunspot, there is a small amount of energy output from the sun. UV rays from the sun also increase at a high sunspot activity. This increase in UV radiation causes dramatic effects on the atmosphere of the Earth.
The more number sunspots are observed, the more energy will be delivered to the earth. This increase in the energy delivered to the earth would result in an increase in the overall global temperature.
According to the graph, the number of sunspots observed decreased from 40 to 5 and increased slightly from 5 to 10 from 1610 to 1700. So, the statement says that some of the warm regions would become colder from 1650 to 1700.
Therefore, the correct option is A.
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question 2
Two abiotic resources that affect an ecosystem are:
A. temperature and animals
B. plants and animals
C. water and bacteria
D. soil and water
Dominant & recessive alleles are similar to sex-linked alleles because...
A. both have alleles that are only present on the X or Y chromosome.
B. both have one allele that hides the other allele when it is present.
C. both blend the allele traits together in the phenotype.
D. both have two or more dominant alleles.
I will give brainliest please help
Answer:
B. Both have one allele that hides the other allele when it is present
HELLPPPP ITS THE HIGHLIGHTED ONE
I think it would be the first ones with lower o2 because fish dont breathe oxygene
Answer:
it would be the one with more oxygen because they would thrive more
Explanation:
what are the proteins that are found all throughout the cell
Animal cells or plant cells??
Answer:
Explanation:Ribosomes are found in many places around a eukaryotic cell. You might find them floating in the cytosol. Those floating ribosomes make proteins that will be used inside of the cell. Other ribosomes are found on the endoplasmic reticulum.
Very easy answer, I will give Brainliest! What is the name of this process? Click the picture above to view.
Answer: Not exactly sure of the specific name of the process, but the picture shows how the sun provides healthy sunlight with the ozone absorbing some of the radiation
Explanation:
A group of scientists studied the effects of exercise on insulin sensitivity in elderly women. The scientists measured the amount of insulin secreted in the saliva when given glucose. Measurements were taken at 0, 20, 40, and 70 minutes after the glucose was administered. The graph shows the data collected before and after a four-month exercise program was put into place
Which statement BEST analyzes the data shown in the graph?
A. Elderly women secrete more insulin the more they exercise.
B. Exercise decreases insulin sensitivity in elderly women.
C. Insulin sensitivity is at its highest after 50 minutes.
D. Insulin sensitivity increases as exercise decreases.
Answer:
B. Exercise decreases insulin sensitivity in elderly women.
Explanation:
I got the answer correct in a test.
Exercise decreases insulin sensitivity in elderly women.
What is Insulin?
Your muscle cells are better equipped to use any insulin that is present to take up glucose during and after exercise because their insulin sensitivity has risen.
Whether or not insulin is present, when your muscles contract during activity, your cells can absorb glucose and utilise it as fuel.
Depending on how long you exercise for, among other things, will determine how your physical activity affects your blood sugar levels.
Learn how your blood sugar changes as a result of activity. You can better understand the advantages of exercise by monitoring your blood sugar levels more frequently before and after exercise.
Therefore, Exercise decreases insulin sensitivity in elderly women.
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While all zebras have stripes, no two zebras share the same stripe pattern. adap
you have to addd more
Explanation:
you have to add more to your question, its is hard to answer
what happens if an event is so frequent or so dramatic that the ecosystem can not recover
What is the difference between asexual and sexual with plants??
I WILL GIVE BRAINIEST IF CORRECT.
Answer:
see below hope this helps !
Explanation:
Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent.
Sexual reproduction involves two parents and produces offspring that are genetically unique.
Answer:
asexual plants are plants that can reproduce without another specimen and have hosts that carry pollen or whatever needed to reproduce and sexual plants need another plant to reproduce
Explanation:
:) hope this helps <3
1. John and Aubrey are trying to decide where to go for dinner. John says he wants Chinese. He
knows Aubrey doesn't really like Chinese but he is in the mood for it. Aubrey tells him she'd
rather have something else. John gets agitated and starts telling her she is just being selfish.
Aubrey backs down and agrees to eat Chinese just so he will stop yelling at her. John then kisses
her, smiles, and says, “I knew you loved me". This is an example of an abusive relationship.
O true
false
Answer:
true
Explanation:
Just because he told she's being selfish ext.. lol it's not normal
Prairies
Forests
Beaches
Dunes
Lakes
Ponds
Rivers
Streams
Wetlands
Coral Reefs
Estuaries
Salt Marshes
Mangrove Swamps
Florida Ecosystems
Once given your Florida ecosystem, you will research and present the topics listed below about your ecosystem. Please include visuals.
Briefly tell us where in Florida your ecosystem is often found and general characteristics
---average amount of water
---general physical characteristics
---unique characteristics of your ecosystem
List and describe 3 common producers found in your ecosystem
---include information such as what type of species prey on these producers, what the producer needs in order to survive and thrive, etc.)
List and describe 6 common consumers found in your ecosystem
---In your descriptions please include what the animals are preying on, where they build shelters, what their niche is, etc.)
Try to find at least one decomposer and/or scavenger in your ecosystem
--- What is it eating/decomposing? How is this helpful to the ecosystem?
List and describe one example of mutualism, one example of commensalism and one example of parasitism in your ecosystem
---Name the species involved and explain the relationships
List any endangered, threatened or extinct species from that ecosystem
Explain 1 food chain in your ecosystem
Explain competition between species in your ecosystem
please help fast am giving 20 points and brainiest ok I posted the same question 2 time please stop whoever is stealing the points please stop am running out of points
Answer:
Called creepy, scary and spooky, bats often get a bad rap. They’re an important species that impact our daily lives in ways we might not even realize. From pollinating our favorite fruits to eating pesky insects to inspiring medical marvels, bats are heroes of the night.
Explanation: