why don't birds get electrocuted when they land on an electric wire?
please help me out :-)
Answer:
Electricity flows by the movement of electrons through conductors. If a bird perches on a wire with two feet there is no motivation to go through the birds' body so electrons choose the path of least resistance and continue to flow along the wire.
Explanation:
Answer:
Because there not grounded
Explanation:
A solar eclipse occurs when the moon
1. passes into the penumbra of earth
2. passes into the umbra of earth
3. passes at a slight tilt between Earth and the sun
4. passes directly between Earth and the sun
Rico and Bree are camping and have potatoes wrapped in foil to eat. Bree put her potato in the campfire for a while, but Rico did not. Now Bree's potato has a high temperature. What is the difference between the molecules of the two potatoes? *
There is no difference because both potatoes are made of the same type of molecules.
What is Molecules?Molecule is a group of two or more atoms that are bound together with the help of some attractive forces. These attractive forces are known as chemical bonds. It is the smallest particle of a substance that has all the physical and chemical properties of that substance.
Atoms have a single nucleus with a positive charge protons surrounded by a cloud of negatively charged electrons. When these come close to each other, the electrons interact with each other and with the nucleus, lowering the total energy of the system, then the atoms bond together to form a molecule.
There are three types of molecules:
1. Molecule of an atom
2. Molecule of an element
3. Molecule of a compound
Thus, there is no difference because both potatoes are made of the same type of molecules.
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Why are we most concerned about CO2 as opposed to other greenhouse gases?
Because CO2 puts us at the greatest risk of irreversible changes if it continues to accumulate unabated in the atmosphere
To locate positions on Earth's surface, scientists use units called
A pixels
B keys
C. contours
D. degrees
Answer:
D. Degrees
Explanation:
Answer:
Degrees
Explanation:
Degrees of latitude identify far north or south. Degrees of Longitude locate far east or west.
why are fossil fuels supplies limited
Answer: The coal, oil and natural gas we are consuming now are the remnants of plants, trees and animals that were living hundreds of millions of years ago. There is no way to replace them, as conditions on Earth are much different now.
Explanation: Mines and wells are being depleted much faster than they were a hundred years ago when demand was much less-- fewer people, fewer cars, fewer planes. . . and people believed there was an endless supply. Many of those mines and oil wells are now empty.
In the process of
Choose...
, DNA is used as a template for making another type of nucleic acid called
Choose...
. The process begins when the enzyme
Choose...
binds to a region called the
Answer:
In the process of transcription, DNA is used as a template for making another type of nucleic acid called RNA. The process begins when the enzyme RNA polymerase binds to a region called the promoter.
Explanation:
I took the test lol
Transcription is a particularly important stage in gene expression, since it is the main method by which the cell regulates which proteins are to be created and at what rate.
What is the role of enzyme in the transcription process?RNA polymerase, which creates a complementary strand of RNA using a single-stranded DNA template, is the primary enzyme involved in transcription.
Each new nucleotide is added to the 3' end of the strand as RNA polymerase constructs an RNA strand in the 5' to 3' orientation.
The first step in unlocking a cell's genetic code is transcription. Enzymes known as RNA polymerases construct complementary RNA molecules to a section of one strand of the DNA double helix during transcription.
Therefore, In the process of transcription, DNA is used as a template for making another type of nucleic acid called RNA. The RNA polymerase enzyme binds to a region known as the promoter to start the process.
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What happens to the pyruvate that enters the Krebs cycle?
According to the passage, which of the following best describes genetic engineering?
A
useless
B
destructive
с
impossible
D
innovative
Answer:
innovative
Explanation:
By correcting genetic flaws, gene therapy aims to prevent or treat hereditary illnesses. The goal of genetic engineering is to alter the genes to give a creature new, enhanced skills. Thus, option D is correct.
What is the role of genetic engineering?The direct altering of an organism's genome through biotechnology is referred to as genetic engineering, sometimes known as genetic modification.
It is a group of scientific techniques used to change the genetic makeup of cells, including the movement of genes within and between species, to produce more advantageous or altogether different creatures.
Applications for genetic engineering include technology, agriculture, and scientific research.
Genetic engineering has been used on plants to enhance the hardiness, nutritive content, and growth rate of crops like potatoes, tomatoes, and rice.
Therefore, innovative best describes genetic engineering.
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Question # 9
Multiple Choice
Which of the following best characterizes the global role of photosynthesis in relation to global warming?
reproduction
circulation
respiration
digestion
What effect does a higher percentage of the compact bone portion have a upon the weight of the bone?
Answer:
The bone weights more as the bone's thickness is wider for a compacter bone.
Explanation:
Compact, sometimes called cortical bone, thick bone with firm organic soil and inorganic salt in the ossic matrix leaving only narrow gaps in which the osteocytes or bone cells are present. The bone is sometimes called the cortical bone.
Answer:
The bone weighs more as its thickness grows wider, causing a more compact bone.
Explanation:
If you are doing ap ex I suggest reading the introduction of the lab and procedure carefully, it helps. :)
This serves as a quick energy source.
a. carbohydrate.
b. nucleic acid
c. lipid.
d. protein.
Negative feedback: If oxygen levels are low, then respiration should
A. increase
B. decrease
Answer:
B. Decrease
Explanation:
Positive feedback is an increase while negative feedback is a decrease.
According to Darwin, "Organisms produce more offspring_____”
A. than will survive to reproduce
B.than plants do
C. because they want to
D. None are correct
The order of building blocks in a strand of DNA makes up a “_____________________.”
Answer:
DNA is made up of nucleic acids. Bases adenine, guanine, thymine, and cytosine are then added in. They make different combinations, or sequences.
Explanation:
All of the following steps are part of both photosynthesis and cellular respiration except
О
A ATP production.
O
B. electron transport
C. glycolysis.
D. formation of H+ gradient
Answer:
C. glycolysis.
Explanation:
Hope this will help
what organization has classified countries as developing or developed?
What is the relationship between changing CO2 emissions and CO2 concentration?
Answer:
When the carbon dioxide concentration goes up, temperature goes up. When the carbon dioxide concentration goes down, temperature goes down.
Explanation:
Which of the following methods would provide the most accurate information for students collecting data about local attitudes concerning the use of alternative fuels for automobiles?
a. Track prices at nearby gas stations
b. Take an opinion poll of drivers
c. Study newspaper articles
d. Listen to speeches given by politicians
B. take an opinion poll of drivers.
Answer:b
Explanation:
Because it’s the only one where you get opinions from people about it.
3. How far does a secondary wave travel in 10 minutes?
Answer:
Explanation:
1 to 8 km/sec- use this to work out 10 minutes
Answer:
Hi There!
Explanation:
1 to 8 km/sec
S-waves are transverse waves. Even though they are slower than P-waves, the S-waves move quickly. Typical S-wave propagation speeds are on the order of 1 to 8 km/sec. The lower value corresponds to the wave speed in loose, unconsolidated sediment, the higher value is near the base of Earth's mantle.
The term used to describe the front of the elbow is
Answer:
Antecubital
Explanation:
In technical anatomical terms, antecubital refers to the area anterior to the elbow—meaning the opposite side. In the human body, the antecubital area is where the humerus (upper arm bone) connects to the radius and ulna bones of the forearm.
The term used to describe the front of the elbow is: Antecubital fossa
Antecubital fossa is the term used to describe the front surface of the elbow. this area is important in the human arm because it is the area where the upper arm bone connects with the bones of the forearm ( ulna and radius ).
The name Antecubital fossa is derived from the Latin name Cubitus
During the insertion of IV into the human body or during blood donation, the Antecubital area is very vital because veins can be easily located around the area than any other part of the body.
Hence in conclusion the term used to describe the front of the elbow is Antecubital.
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Explain how ships transport invasive species in the ballast?
Answer:
Larger ships transport invasive species in their ballast water, while fouling organisms such as barnacles, seaweeds and mussels can move from one location to another by hitching, a ride on a boat, on items you use in the water and even your clothes
Poison dart frogs live in the rainforest. They produce a poison by eating toxic fire ants. The only known predator is a snake, Liophis epinephelus. Which is most likely a density-independent factor that affects the poison dart population in the rainforest? clear cutting the rainforest limited food source susceptibility to disease increase in population of Liophis epinephelus
Answer:
Clear-cutting the rainforest
Explanation:
Density-independent factors of a population are factors that limit the size of a population irrespective of the density of the population.
A limited food source can only be defined by the size of a population, diseases will spread faster in high-density populations, and an increase in the population of a predator will cause a decrease in the population size of the predator's prey.
Clear-cutting of the rainforest means automatic destruction of the habitat of the poison dart frog's population, no matter the population size. Hence, clear-cutting of the rainforest is considered as the density-independent factor in this case.
Answer:
A.) clear cutting the rainforest
Explanation:
got it right on edge 2021
Margaret has detached earlobes (a) , which is a recessive trait. If she wanted ALL of her children to have attached ears (A), what type of man would she need to marry in order to give her the best chances?
A. A man with the genotype AA
B. A man with the genotype aa
C. A man with lobed ears like hers
D. A man with the genotype Aa
Margaret can have all her children with attached earlobes only if she marry a man with AA dominant genotype.
As given,
Margaret has detached earlobes (a) which is a recessive trait If she wanted all of her children to have attached ears (A) if she have to marry a man with the dominant trait
Punnett' square:
A A
a Aa Aa
a Aa Aa
[Aa] are the genotype with attached earlobes [dominant genotype]
Therefore, Margaret can have all her children with attached earlobes only if she marry a man with AA dominant genotype.
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Is wood a living thing or non living? And why?
Answer:
wood is non living
Explanation:
it was once living because it came from a tree
if the hawk were to removed from the food chain, which consumer would increase in population
Answer:
Everything from the hawk's diet
Explanation:
Mice, rats, shrews, without their main predator, the ecosystem would become unbalanced by the increasing overpopulation of rodents and most likely small snakes that are also on hawks' diet. Another consumer would probably be other animals that eat the hawks' diet. Without a competing consumer, the, let's say snake, population would grow larger.
hope this helps:)
11. How can the rate of an infectious disease be drastically reduced?
a By taking medication daily
b. By preventing transmission between people
C. By wearing clean clothes daily
d. By performing dental hygiene three times daily
Answer:
b
Explanation:
trust trust trust trust
How do metamorphic rocks work?
Answer: Metamorphic rocks are formed from other rocks that are changed because of heat or pressure. They are not made from molten rock. rocks that do melt form igneous rocks instead. Earth movements can cause rocks to be deeply buried or squeezed. As a result, the rocks are heated and put under great pressure.
Explanation:
Is a Heterotroph a araebacteria or a eubacteria
How do molecules move differently if the temperature is increased?
Answer:
Particles move rapidly in all directions but collide with each other more frequently than in gases due to shorter distances between particles. With an increase in temperature, the particles move faster as they gain kinetic energy, resulting in increased collision rates and an increased rate of diffusion
Explanation:
Answer: Particles move rapidly in all directions but collide with each other more frequently than in gases due to shorter distances between particles
Explanation: