Answer:
The three R's – Reduce, Reuse and Recycle – represent the best strategy for conserving non-renewable oil, coal and natural gas. ... Increasing the reliance on renewable energy sources, such as solar, wind and geothermal generators, can also help conserve the dwindling supplies of fossil fuels that remain in the ground.
Explanation:
Hemophilia is a sex-linked recessive trait. If a man with hemophilia marries a woman who is a carrier for the trait, what are the predicted
phenotypes for their children?
• A1 carrier male: 1 affected male: 1 carrier female: 1 affected female
B 1 carrier male: 1 affected male: 1 carrier female: 1 normal female
C1 normal male: 1 affected male: 1 carrier female: 1 normal female
OD 1 normal male: 1 affected male: 1 carrier female: 1 affected female
Answer:
c i hope it works
Explanation:
No sons of a man with hemophilia will have hemophilia.
All daughters of a man with hemophilia will be carriers (called obligate carriers).
If a carrier has a son, the son has a 50% chance of having hemophilia.
If a carrier has a daughter, the daughter has a 50% chance of being a carrier.
For hundreds of years the island of Jamaica has warm tropical weather.
A. weather
B. climate
C. climate change
HELP!!!!! 50PTS!!!!!!
Most Swiss starlings produce four to five eggs in each clutch. Starlings producing fewer or more than this have reduced fitness. Which of the following terms best describes this situation? (3 points)
The bottleneck effect will result in a small gene pool with little genetic diversity.
Directional selection will happen because the population individuals will be unable to adapt, leading to extinction.
Disruptive selection will result in the population of birds' risk decline, due to reduced number of eggs.
Genetic diversity allows for birds to produce an ideal number of eggs, which leads to stabilizing selection. I think is D
Answer:
D: genetic diversity allows for birds to produce an ideal number of eggs, which leads to stabilizing selection.
Explanation:
Genetic diversity allows for birds to produce an ideal number of eggs, which leads to stabilizing selection. The correct option is D.
What is genetic diversity?The spectrum of various inherited traits inside a species is referred to as genetic diversity.
There would be many individuals with a wide range of different traits in a species with high genetic diversity. For a group of related species to adapt to changing environments, genetic diversity is mandatory.
Genetic diversity aids the populations to adapt to altering environments. More variation boosts the likelihood that some individuals in a population will have allele variations that are suited to the environment. Those people are more likely to survive and have children with that allele.
Birds can produce an optimal number of eggs due to genetic diversity, which leads to stabilizing selection.
Thus, the correct option is D.
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Which diagram shows the Moon when it is least visible from Earth?
HELP!!!!
The first diagram shows that moon is least visible from the earth due to darkness.
The first diagram shows that moon is least visible from the earth because the moon is present behind the earth or earth is present in between sun and moon. The moon is not visible due to its presence in the dark. If it is present at the side of the earth then the moon is more clearly visible due to the light of the sun so we can conclude that the first diagram shows the moon is least visible from the planet earth.
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HELPPP PLEASE!!! during the summer of 2015, the New Horizon space probe provided the first fly by images of the dwarf planet Pluto. Which of the following distances best reflects the distance the New Horizon traveled from Earth to Pluto?
A. 32.63 astronomical units
B. 7 million kilometers
C. 4.67 light years
D. 600,000 miles
Answer:
A. The New Horizon space probe traveled about 3 billion miles, which is 32 AU (Astronomical units)
The distance best reflects the distance the New Horizon traveled from Earth to Pluto is 32.63 astronomical units. The correct option is A.
What are planets?Planets are revolving bodies of gases and material. There are eight planets in our galaxy. These planets are present at a proper distance from each other, and they all revolve around the sun. The distance between bodies of the solar system is measured by astronomical units.
The distance between these planets and the sun is measured by astronomical units. It is denoted by Au. A kilometer is used to measure the distance in the earth between two objects. Light years are used to measure the speed of light. Miles is the US measurement system used to measure the distance as a kilo meter.
Thus, the correct option is A. 32.63 astronomical units.
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Which plantlike protists do not have flagella?
a). diatoms
b). dinoflagellates
c). euglenoids
25 POINTS PLEASE HELP. Check the correct column(s) for each description *
Prokaryotes
Eukaryotes
Contains cytoplasm
Do NOT have membrane-
bound organelles
Cells do NOT have a nucleus
Can be unicellular or
multicellular
Have ribosomes
Have cell membranes
Have genetic material
(DNA/RNA)
Plants and animals
Answer:
1. Both
2. Prokaryotes
3. Prokaryotes
4. Eukaryotes
5. Both
6. Both
7. Both
8. Eukaryotes
Limiting nutrients often...
A. limits primary productivity
B. limits the rate of predation
C. limits reproductive cycles
Help me please!!!
This is due today!!! I will mark brainstest answer to who ever answers first.
Answer:
A car slowing as it reaches a traffic light
Explanation:
please give the brainstest
What is needed to fossilize a mammal versus a plant?
Answer:
The body must be safe from decomposition
what are the bases found in DNA
In Linnaeus's time, all life was divided into thich two kingdoms?
a. plants and fungi
b. bacteria and animals
c. animals and protists
d. animals and plants
Answer:
The answer is D. Animals and plants
can someone please help me
WILL MARK U BRAINLEIST !!
Which body parts of an organism are most likely to be made into fossils?
structure that helps move bacteria is called a
Explanation:
Flagella - Flagella (singular, flagellum) are hairlike structures that provide a means of locomotion for those bacteria that have them. They can be found at either or both ends of a bacterium or all over its surface.
Help plz!!!
1. explain how water and carbon cycles through the environment
2. relate the cycling of matter to the success of an ecosystem
3.explain the importance of effective resource management
Answer:
Animals and plants need to get rid of carbon dioxide gasses through a process called respiration carbon moves from fossil fuels to the atmosphere when fuels are burned the ocean and other bodies of water absord some carbon from the atmosphere the carbon is dissolved into water.
What is the main characteristic of love?
Is meiosis II more similar to meiosis I or mitosis? Explain.
Answer:
The main differences between mitosis and meiosis occur in meiosis I. ... Meiosis II is much more similar to a mitotic division.
Explanation:
Differentiate between the layers of the Earth based upon physical properties AND explain the flow of heat within and between the layers of the Earth.
Answer:
The Earth can be divided into 5 main layers according to their physical properties: the lithosphere (most superficial layer of the Earth: rigid and cold), the asthenosphere (Second most superficial layer of the Earth: soft and ductile), the mesosphere or lower mantle ( Middle layer of the Earth: rigid and hot, able to flow gradually), the outer core (Second innermost layer of the Earth: liquid) and the inner core (innermost layer of the Earth: solid). The flow of heat inside the Earth will depend on the temperature and the characteristics of the material. The crust behaves like a solid and has relatively low temperatures. The mantle behaves like a fluid and since convection is much more efficient in this case, that is the main means of transport, even though the relatively high temperatures make it possible for energy to also be transported by means of radiation.
Explanation:
As you descend into the Earth's interior, the temperature, pressure, and density of the rocks gradually increase. The Earth can be divided into five main regions based on its physical properties (temperature and pressure) and according to its mechanical resistance: lithosphere the chemical composition of this layer is notably different, it also acts as a unit that shows a rigid behavior (not can be bent), mainly because it is cold and consequently resistant, asthenosphere located in the upper mantle (at a depth of about 660 km), there is a comparatively plastic soft layer, mesosphere (lower mantle) more rigid layer and it is because as the pressure increases, it counteracts the effects of the higher temperature and the resistance of the rocks increases gradually with depth. Despite their resistance, the rocks of the mesosphere are still very hot and are able to flow in a very gradual way, the outer core is a 2270 km thick liquid layer. The convective currents of iron in this area are those that generate the Earth's magnetic field and the inner core of the material is more resistant than the outer core (due to the enormous pressure to which it is subjected) and behaves like a solid. When penetrating the crust of the Earth a change in temperature is observed, in general it increases; this variation in temperature with depth is called a geothermal gradient. The heat flux on the Earth's surface is calculated as the product of the geothermal gradient and the thermal conductivity of the rocks, these two parameters being directly determined. The Earth is basically made up of three concentric layers: the innermost core has a composition of cast iron at a temperature of over 4,000 ºC; the mantle that is the intermediate layer formed by iron and magnesium silicates and its temperature varies from 4,000 ºC in its contact with the core to 800-1000 ºC of its outer surface that contacts the crust that is the most superficial layer and visible by man. This crust has a variable thickness of 5 to 35 km and is made up of aluminum and magnesium silicates, its temperature varying between 800-1000 ºC of contact with the mantle and 15-20 ºC of the surface that we know.
Maintaining safe water for drinking is an important goal for municipal water supply strategy. One of the last step
in drinking water treatment includes disinfection, a process that is used to
O A. remove chlorine from water
O B. kill waterborne pathogens
O C. add iodine to prevent goitre
O D. remove mercury water
How many types of muscels are there? Write their functions in breif.
Answer:
There are three types of muscle, skeletal or striated, cardiac, and smooth. Muscle action can be classified as being either voluntary or involuntary. Cardiac and smooth muscles contract without conscious thought and are termed involuntary, whereas the skeletal muscles contract upon command.
Explanation:
I HOPE IT'S HELPWrite two statements expressing the relationships between voltage and current and resistance and current.
Explanation:
The current flowing in a circuit is directly proportional to the applied voltage and inversely proportional to the resistance of the circuit, provided the temperature remains constant.If we increase the amount of voltage applied, and do not change the resistance, we will also increase the current.please answer the question in the picture if you know the answer and thxxx :) :) :)
Every copy of a particular protein manufactured by a cell shows the same incorrect amino acid at the same point in its structure. According to the central dogma of molecular biology, in which structure does this error originate?
1. mRNA
2. DNA
3. tRNA
4. rRNA
Answer:
Dna
Explanation:
I had this on a test and this was the answer
According to the central dogma of molecular biology, DNA does this error originate.
What are the functions of DNA?Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix.
DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins.
DNA is made of nucleotides. A nucleotide has two components: a backbone, made from the sugar deoxyribose and phosphate groups, and nitrogenous bases.
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___________________________ are bodily structures that are similar in structure, but different in function, due to sharing a common ancestor
Answer:
Homologous structure
Explanation:
Have a great day
What would be worse for this food web,the removal of the mouse or the squirrel and why
Answer:
It appears that neither would be worse since they both have an equal impact on the ecosystem, not sure if this is an option though, goodluck with your assignment
Answer:
Either, because the removal of either one would have the same impact because they eat the same food and are preyed upon by the same predators.
Please help. This model shows a strand of DNA. Identify how information for specifying the traits of an organism is carried in the DNA.
A)
DNA codes for the sequence of nucleotides in RNA.
B)
The nitrogen bases in DNA code for the sequence of amino acids that make
up a protein
C)
The nitrogen bases in DNA code for the sequence of nucleic acids that
make up a protein.
D)
The sugar molecules found in the backbone of a DNA molecule code for
the RNA nucleotides.
Answer:B
Explanation: I just did it
Answer:
the answer is B)
Explanation:
DNA is made of nucleotide nitrogen bases, witch turn into Amino Acids, and then finally into protein
If a bacterium is ____ to a drug, then that drug can be used to treat bacterial infection
Resistant
Neutral
Aseptic
Sensitive
Answer:
sensitive
Explanation:
The symbol on a weather map for a cold front is what?
A. a line with triangles on it
B. a line with semi-circles on it
C. a line with squares on it
Explanation:
A line with triangles in it
which protects the dna of a virus
A pilus
B plasmid
C bacteriophage
D capsid
A capsid is a protein shell that protects the DNA of a virus. The correct answer is D) capsid.
What is a capsid ?A capsid is a protein shell that encases the genetic material (either DNA or RNA) of a virus. It is a protective layer that helps the virus survive in harsh environments and protects its genetic material from damage by environmental factors such as UV light, enzymes, and other harmful substances. Capsids can be composed of one or more types of proteins and can take different shapes and sizes depending on the type of virus.
In addition to the capsid, some viruses may also have other protective structures or mechanisms that help them survive in their host environment. For example, some viruses have a lipid envelope that surrounds their capsid, which helps them enter and exit host cells more easily. Others may have other protective layers, such as a protein coat, that help them resist immune system defenses.
It is worth noting that neither A) pilus nor B) plasmid nor C) bacteriophage protects the DNA of a virus. A pilus is a hair-like structure found on the surface of some bacteria that helps them attach to other cells or surfaces, while a plasmid is a small circular piece of DNA that is separate from the bacterial chromosome and may carry genes that confer antibiotic resistance or other advantageous traits.
Hence, Bacteriophages are viruses that infect and replicate within bacterial cells, but they do not protect the DNA of other viruses.
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