Healthy top soil is needed to grow crops, which in turn some of it becomes food. Erosion is the process in which top soil is carried away by the wind or rain water (depositing it into nearby lakes or streams). Without this top soil, farming becomes more difficult and crop yields likely decrease. In some cases, no crops can be grown at all. An extreme example of soil erosion, specifically wind-driven soil erosion, is the 1930s dust bowl during the Great Depression. This occurred due to over-farming and it led to massive dust storms. In turn, it caused many farmers to leave the area.
According to the diagram how are the three components
of a nucleotide important to the structure of DNA?
Answer:
A nucleotide of DNA is made up of three parts: a nitrogenous base, a 5-carbon sugar, and a phosphate group. The four nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine.
The phosphate group linked with deoxyribose sugar to make the framework for the nitrogenous bases. The phosphate group and sugar molecule make the DNA backbone and support it. These backbones hold nitrogenous bases and make a monomer of DNA. Nitrogenous bases make DNA stable and hold both backbones together. These bases also make DNA functional.
Which of the following does NOT provide evidence of the theory of evolution?
a. homologous structures
b. fossil records
c. biochemical evidence
d. analogous structures
e. embryology
Answer:
homologous structures
Analogous structures are different species that are similar in function but not in structure and which do not from a common ancestral feature.
What is evolution and examples?A person modifying their opinions about a social issue after living in a seprate part of the world for a period and meeting others who differ.
Natural selection in association hat indicates the economic or social success of people who are more powerful or Comptent than others.is
Thus, option "D" is correct, Analogous structures are different species that are similar in function.
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Imagine that a company is planning to build a new factory in your region that will provide hundreds of well-paid jobs, but will cause minor amounts of air pollution within a two-mile radius. Answer the following questions: How would you rate your support for the factory if you lived 50 miles away from its planned location? How would you rate your support for the factory if you only lived one mile away from its planned location?
Answer:i would rate it 4/5
Explanation:if it is going to cause minor amounts of air pollution within a two mile radius and you live 50 miles away the air pollution wont harm you
If I live 50 miles away from the planned location then I would rate 10/10 for the planning but if I live within one mile then I will rate only 2/10.
If I am living 50 miles away i will not be affected by the pollution caused by the factory rather I will be gained by the facilities provided by the factory.
But if I am within one meter of the factory location then I have to face the pollution caused by it , which is going to effect my health condition. so I will rate it lesser.
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Blood plasma is made up mostly of:
Answer:
It constitutes more than half of the blood's volume and consists mostly of water that contains dissolved salts (electrolytes) and proteins.
Explanation:
Which of the following is an abiotic factor in a biome
Answer: C
Explanation: Abiotic means non living so Wind, sunlight, soil, temperature, atmosphere, and water.
The benefit of social behavior that refers to searching for and collecting food is referred to as .
Answer:
Ngl bro i like your pfp, its fire
Answer:
Foraging
Explanation:
How can embryos be more useful than adults to show evolutionary relationships among organisms?
Select one:
Related organisms always appear identical in embryonic stages.
Adults may have mutations that are not found in embryos.
Evolutionary relationships are more easily observed in more simple organisms.
Features found in embryos may not be found in adults.
Answer:
Related organisms always appear identical in embryonic stages.
Explanation:
Embryos of organisms that have a closer genetic relationship to one another tend to look similar for a longer period of time since they share a more recent common ancestor. Thus, embryology is frequently used as evidence of the theory of evolution and the radiation of species from a common ancestor.
Can someone tell me if this is correct I need help with the percentage
Answer:
Hand = 75%
No hand = 25%
Explanation:
It's the same thing as last time. Since 3 of them are heterozygous and have 1 dominant allele, they have the dominant trait. And since one of them only has recessive alleles then it should have the recessive traits.
So the hand should have 75% and no hand has 25%.
( I saw someone else just post a link so I answered it in that question box, but it got deleted so i'm just writing it out here ig)
The heart is one of the first parts of the embryo to develop. What part of the stem cells provides instructions for building the heart?
Answer:
answer d
Explanation:
DNA provides instructions for building the heart
How could the interaction between the stove, the water, and the air be used to model the movement of energy between
Earth's subsystems?
Answer:
Can you think of some examples of interactions between two or more spheres? Atmosphere. Geosphere. Hydrosphere. Biosphere. Atmosphere.
Atmosphere: the blanket of gases surrounding the planet
Geosphere (lithosphere): all of the rocks and "hard parts" of the Earth
Biosphere: all living things
Hydrosphere: all of Earth's water
Answer:
The stove represents the Sun’s energy input to the hydrosphere. The energy exchange between the water and the air represents the energy exchanged between the hydrosphere and the atmosphere.
Explanation:
can somebody please help me?
Answer:
100% of the offspring would be black fur, black eyes (16/16)
Explanation:
(Because the info. wasn't included here, I'm assuming black fur and black eyes are dominant, BBEE, to the recessive white fur and red eyes, bbee)
For BBEE x bbee, you'd create a typical dihybrid true-breeding punnett square , where the first top row would be BE , BE, BE , BE , and the vertical/side row would be be, be, be, be.
Cross these alleles as you would typically for any punnett square, and you'd see that all the offpsring would result in BbEe genotypes, which is true of any true-breeding dominant x recessive cross, which always results in the dominant phenotype being 100%.
So...
Black Fur and Black Eyes : 16/16 (100%)
Black Fur and Red Eyes: 0/16
White Fur and Black Eyes: 0/16
White Fur and Red Eyes: 0/16
birth defects due to radiation are a concern also. why is a fetus especially at risk?
Of the babies that survive, however, few will have birth defects related to the exposure, regardless of how much radiation they were exposed to. Large radiation doses to the fetus during the more sensitive stages of development (between weeks 2 and 18 of pregnancy) can cause birth defects, especially to the brain.
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How did Mendel solve the problem of always observing the same traits in his experiments?
Alleles are represented by using letters. A dominant gene is
represented by what kinds of letters? Capital or small letters?
Answer:
Capital
- Refer to the basic theory in genetics.
The digestive, respiratory and circulatory systems are controlled
by the:
Select one:
a. skeletal system
b. ophthalmic branch
C. voluntary nervous system
d. autonomic nervous system
PLEASE HURRY 5 mins left !!!
Answer:
D
Explanation:
The digestive, respiratory and circulatory systems are controlled by the: d. autonomic nervous system
The autonomic nervous system (ANS) is the part of the nervous system that controls involuntary physiological processes (e.g., heart rate, blood pressure, respiration and digestion).
ANS supplies internal organs such as the stomach, intestine, liver, kidneys, bladder, genitals, digestive glands, etc.
ANS is divided into three main parts: Sympathetic nervous system: responsible for forming localized adjustments (e.g., sweating) and cardiovascular system adjustments. Parasympathetic nervous system: responsible for body functions when the body is relaxed, resting, or feeding. Enteric nervous system: responsible for controlling the gastrointestinal tract functions.
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an organism that is made of many eukaryotic cells and eats
snails. Which kingdom of life is it?
Answer:
animalia.
Explanation:
g Neuron A and neuron B interact with neuron C. Neuron A will produce an IPSP of -2mV in neuron C; neuron B produce an EPSP of 3mV in neuron C. The resting membrane potential is -70mV and the threshold is -50mV. Neuron A fires 6 times rapidly at the same time that neuron B fires 4 times rapidly. What is the resulting membrane potential in neuron C
Answer:
-70 mV
Explanation:
Given that Neuron A and Neuron B interact with Neuron C
Neuron A produces ; - 2mV of IPSP and fires 6 times
Neuron B produces ; 3mV of EPSP and fires 4 times
Resting potential = - 70mV
threshold = - 50mV
The resulting membrane potential in neuron C
= -70 + 6(-2) + 4(3)
= -70 - 12 + 12 = -70 mV
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1. What is the desired FUNCTION of a garden?
2. What are the subsystems in a garden? Explain.
Answer: A garden is a planned space, usually outdoors, set aside for the display, cultivation, or enjoyment of plants and other forms of nature, as an ideal setting for social or solitary human life. The single feature identifying even the wildest wild garden is control.
Explanation:
Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air). which means gardens to i think
Give an example of
how radiation is
transformed into
other forms of
energy.
help me
Answer:
Radio waves. Electricity. A surface heated by the sun converts the energy of the light into infrared energy which is a form of radiant energy.
Explanation:
;P
The difference in the chromosome arrangement during meiosis in the metaphase plate can lead to greater genetic diversity in a population. Explain your answer
Explanation:
Like mitosis, meiosis is a form of eukaryotic cell division. However, these two processes distribute genetic material among the resulting daughter cells in very different ways. Mitosis creates two identical daughter cells that each contain the same number of chromosomes as their parent cell. In contrast, meiosis gives rise to four unique daughter cells, each of which has half the number of chromosomes as the parent cell. Because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical — without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes!
Apart from this reduction in chromosome number, meiosis differs from mitosis in yet another way. Specifically, meiosis creates new combinations of genetic material in each of the four daughter cells. These new combinations result from the exchange of DNA between paired chromosomes. Such exchange means that the gametes produced through meiosis exhibit an amazing range of genetic variation.
Finally, unlike mitosis, meiosis involves two rounds of nuclear division, not just one. Despite this fact, many of the other events of meiosis are similar to those that occur in mitosis. For example, prior to undergoing meiosis, a cell goes through an interphase period in which it grows, replicates its chromosomes, and checks all of its systems to ensure that it is ready to divide. Like mitosis, meiosis also has distinct stages called prophase, metaphase, anaphase, and telophase. A key difference, however, is that during meiosis, each of these phases occurs twice — once during the first round of division, called meiosis I, and again during the second round of division, called meiosis II.
Describe early land plants
Answer:
The following seems to be a summarization of the topics.
Explanation:
Not too far from the rich water supply or water bodies can early soil vegetation or flora persist, is considered as early land plants.Throughout history, land organisms have different ways of surviving with rising drought, our rocky earthly environment is turned into such an environment of multilayered sediments as well as varied biotic organisms.
Which of the following will most likely result if all of the primary consumers are removed from this ecosystem?
Answer:
Secondary consumers will lower in numbers and the producers (plants) will be overabundant.
Explanation:
Okay so secondary consumers eat the primary consumers and the primary consumers eat the producers (plants). If there are no primary consumers, there is no one eating the plants which will lead to the producer population growing because there's less stopping them from growing in numbers. The secondary consumers will be in trouble because the secondary consumers don't eat plants. If there are no primary consumers, the secondary consumers won't be able to eat and the numbers of secondary consumers will decrease.
a lot more prodcers
Explanation:
Humans and baboon have noses with nostrils that face downward, but many other primates have noses with nostrils that face out to the sides. Humans and baboons are also more closely related to each other than they are to primates with outward-facing nostrils. Therefore, the fact that both humans and baboons share the downward-facing nostril orientation is an example of
Answer:
a shared derived trait.
Explanation:
Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.
Simply stated, a trait refers to the specific features or characteristics possessed by a living organism. It is essentially transferred from the parent of a living organism to her offspring and as such distinguishes him or her.
Heredity refers to the transfer of traits (specific characteristics) from the parent of a living organism to her offspring through sexual reproduction or asexual production. Some examples of hereditary traits are dimples, tongue rolling, baldness, weight, handedness, freckles, curly hair, hair color, blindness, complexion, height, etc.
All humans and baboons are created having noses with nostrils underneath i.e facing downwards but other primates such as platyrrhines have their nostrils facing sideways (face out to the side). Also, humans and baboons shared close similarities with each other when compared than they share with the primates having a outward-facing nostrils.
This ultimately implies that, both humans and baboons sharing the downward-facing nostril orientation is an example of a shared derived trait.
A shared derived trait can be defined as a trait or characteristic that is shared between two lineages and subsequently evolves leading up to a clade, which is a distinguishing feature from other species.
PLEASE HELP! Scientists performed studies on mussels and clams. They placed these different species in fresh water that had contaminants commonly found in agricultural runoff and human and animal waste. Within a few days, the mussels and clams had removed the majority of the contaminants. How do these findings relate to ecosystem services in natural environments?
A.
Introducing new species of mussels and clams will help reduce erosion and runoff into rivers.
B.
Increasing the biodiversity of mussels and clams in freshwater ecosystems will improve water quality.
C.
Growing mussels and clams in rivers will provide humans with a steady source of food.
D.
Using a single species of mussel or clam will remove greenhouse gasses from the atmosphere.
Answer:
b
Explanation:
biodiversity means increase value or increase the amount of mussels and clams in rivers to increase water quality
what are the interactions between atoms that are hydrolyzed by fungi to release nitrogen from these molecules?
I need answer for question B please!!
Answer:
the time of day cause the differences in wind patterns
Explanation:
Help with this??
Aaaaaaa
Answer and Explanation
25%
Answer:
25%
Explanation:
sorry
01:46:45
Which statement correctly describes a feature of the rock cycle?
O Rocks are preserved through the process.
O Rocks change from one type to another.
O Different rock groups are not related to one another.
O Rocks change from one type to another in a specific order.
Answer:
The correct description of a feature of the rock cycle is:
O Rocks change from one type to another.
Explanation:
Sedimentary, metamorphic, and igneous rocks are the three main rock types. Together, they form the universal rock cycle. A sedimentary rock, for example, can change from its known state to another state by passing through crystallization, metamorphism, erosion, and sedimentation. There are no specific orders for the change. The processes that they pass through determine the resulting type.
Answer:
Rocks change from one type to another.
Explanation:
What types of regulations are designed to bring awareness to and reduce the amount of air pollution?
clean air acts
industry regulation acts
pollution for the people acts
water pollution controls
Answer:
clean air acts
Explanation:
Most neighborhood streets are illuminated at night by streetlights. The streetlights are _____ and _____. Therefore, they are likely to be _____ by the competitive market. nonrival; excludable; underprovided nonrival; nonexcludable; underprovided rival; excludable; efficiently provided nonrival; nonexcludable; overprovided
Answer:
nonrival; nonexcludable; underprovided.
Explanation:
In a perfect competition, there are many buyers and sellers of homogeneous products, and there is free entry and exit in the market.
This simply means that, in a perfectly competitive market, there are many buyers and sellers (price takers) of homogeneous products (standardized products with substitute) and the market is free (practically open) to all individuals or business entities that are willing to trade all their goods and services.
Generally, a perfectly competitive market is characterized by the following features;
1. Perfect information.
2. No barriers, it is typically free.
3. Equilibrium price and quantity.
4. Many buyers and sellers.
5. Homogeneous products.
A substitute product can be defined as a product that a consumer sees as an alternative to another product and as such would offer similar benefits or satisfaction to the consumer.
For substitute products (goods), the cross-price elasticity of demand is always positive because the demand of a product increases when the price of its close substitute (alternative) increases.
A nonexcludable good simply means that it's near impossible for a user to effectively exclude others from using the good. Thus, each and every individual have access and can use the goods.
Basically, all public goods such as streetlights are nonrival and nonexcludable goods.
Similarly, nonrival goods refer to goods that can be accessed, processed and consumed (used) by multiple consumers at a specific period of time.
Additionally, any good that is nonrival and nonexcludable is said to be a public good.
In this scenario, most neighborhood streets are illuminated at night by streetlights. The streetlights are nonrival and nonexcludable. Therefore, they are likely to be underprovided by the competitive market and this is generally considered to be a market failure.
Hence, a market failure arises when there is inefficiency in the distribution or allocation of goods and services in a free market.
This ultimately implies that, the demand of the consumer of these goods and services are not being met with the level of supply (output) required i.e the forces of demand and supply are not efficient in producing the level of output required by the economy. Some of the causes of market failure are imperfect information, monopoly, oligopoly, externalities, etc.