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Related Questions
6 th grade science lol
is mars Held in orbit by the gravitational pull of a planet
Answers
Answer:
True
Explanation:
Jupiter holds Mars in place and the reason Mars has moons is that Jupiter astroids at Mars so Mars can pull them with its gravity.
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The local scout troop headed out for a weekend camp out. The campers met at point
A and hiked up to point B to set up a camp site. What was the change in elevation
for these campers?
100 m
110 m
120 m
200 m
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Answer:
120
Explanation:
im 100% sure
based on the reading above describe two diff between mysteceti and odonticeti whales one diff should be in anatomy and the other in feeding behavior. plz help me guys give a short answer
Answers
Answer:
both are different in feeding behaviour and blowholes.
Explanation:
The main difference between Mysteceti and odonticeti whales is the presence of feeding behaviour. Mysteceti whales also known as baleen whales which have baleen plates that capture prey from sea water while on the other hand, odonticeti whales have teeth which helps these whales to hunt aquatic animals. Baleen whales have baleen plates, or sheets, which sieve prey or food from seawater whereas toothed whales have teeth which helps them to actively hunt fish, squid and other sea creatures. The number of blowholes also different in both whales, Odontoceti whale has only 1 blowhole, but the Mysticeti has two blowholes in its body.
Relative to the length of time life has been on Earth, have modern humans appeared recently or in the distant past?
pLeAsE HeLp Me...
Answers
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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nombradme 5 artropodos que respiren mediante traqueas
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Answer:
Basic Categories of Arthropods
Chelicerata: horseshoe crabs, spiders, scorpions, sea spiders and mites.
Myriapoda: millipedes, centipedes, pauropods and symphylans (known as glasshouse symphylans or garden centipedes)
Crustacea: brine shrimp, barnacles, lobsters, crabs, shrimp and remipedes.
Explanation:
Hope it helps
Look at the food web below.
What would happen if the grains died out?
Is this an example of high or low biodiversity?
A. Mice would die out and there would be less food for all the rest of the animals in the food web. This is an example of LOW biodiversity.
B. Foxes would die out BUT there would be more food for all the rest of the animals in the food web. This is an example of LOW biodiversity.
C. Mice would have more food but the rest of the animals would starve. This is an example of FAIR biodiversity.
D. Owls would die out and there would be less food for all the rest of the animals in the food web. This is an example of HIGH biodiversity.
Answers
Answer:
below
Explanation:
C. Mice would have more food but the rest of the animals would starve. This is an example of FAIR biodiversity. Sorry if this is wrong
what kind(s) of cells can develop from multipotent stem cells?
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30 POINTS!!! PLZZZ HELP
1. What processes create igneous rocks?
2. What processes create metamorphic rocks?
3. What processes create sedimentary rocks?
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Answer:
Igneous rocks form when magma (molten rock) cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust.
Sedimentary rocks are erosion, weathering, dissolution, precipitation, and lithification. Erosion and weathering include the effects of wind and rain, which slowly break down large rocks into smaller ones.
Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors.
Explanation:
Answer:
1. Igneous rocks form when magma molten rocks cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust. All magma develops underground, in the lower crust or upper mantle, because of the intense heat there.
2. Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors. Conditions like these are found deep within the Earth or where tectonic plates meet.
3. The most important geological processes that lead to the creation of sedimentary rocks are erosion, weathering, dissolution, precipitation, and lithification. Erosion and weathering include the effects of wind and rain, which slowly break down large rocks into smaller ones.
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Which of the following is the best definition of alternative energy?
A. Energy sources that can be used in place of hydroelectric energy
B. Energy sources that can be used in place of wind energy
C. Energy sources that can be used in place of coal
D. Energy sources that can be used in place of fossil fuels
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Answer:
D
Explanation:
Alternative energy is best defined as the use of energy sources other than traditional fossil fuels, which are considered environmentally harmful and are in short supply. Fossil fuels consist of natural gas, coal, and oil. Currently, fossil fuels are the most used energy source to heat our homes and power our cars.
Answer:
D.)
Explanation:
Alternative energy is best defined as the use of energy sources other than traditional fossil fuels, which are considered environmental harmful and are in short supply.
How does composting help a landfill?
C. it allows things to decompose over 100's of years
B. helps break down biomass
D. it does not help the landfill
A. it takes up a lot of space
pls help :))
Answers
Answer:
C
Explanation:
It doesn't take 100s of years to decompose biomass. Usually it takes less than a year. Not C
It should help the land fill: D is incorrect
Initially it probably does take up a lot of space or more than the results of composting. But that's not why you do it. You do it because eventually very little will be left and it makes wonderful fertilizer. A is a half truth.
I'd pick C
the broad portion of the leaf that carries out photosynthesis
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Answer:
It is called the Blade
Explanation:
The blade is the broad part of a leaf that holds the green food making cells.
what kind of cells perform mitoses
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13. What type of chemical hazard is a person ingesting if they eat a lot of processed foods, cured
meats, and certain types of wines?
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Answer:
The correct answer is - health hazards (carcinogenic).
Explanation:
Processed foods, cured meat, and certain types of wines have a chemical present in them for increasing the life of the food and taste. This chemical is used in this food are known for their cancer-causing properties and grouped as group 1 carcinogen which comes under health hazard of type of chemical hazard.
N-nitroso-compounds (NOC) and polycyclic aromatic hydrocarbons (PAH) are the two major chemicals used in cured meat and processed food. There are many other severe health conditions also caused by ingesting a high amount of such food like diabetes, cardiovascular disease, and obesity.
Huntington’s disease (HD) is prevalent South Africa. Most of the families with HD have Dutch or British ancestry, which suggests they inherited the European HD allele. HD is believed to have first arrived in South Africa more than 300 years ago when Dutch colonists settled into the Western Cape in the 1600s. Thus, the prevalence of HD in South Africa is the result of the founder effect.
Mutations in the HTT gene cause Huntington’s disease. The HTT gene provides instructions for making a protein called huntintin. This protein plays a role in nerve cells in the brain. The HTT mutation that causes HD involves a DNA segment known as a CAG trinucleotide repeat. This segment is made up of a series of three DNA building blocks that appear multiple times in a row. Normally, the CAG segment is repeated 10 to 35 times within the gene. In people with HD, the CAG segment is repeated 36 to more than 120 times. An increase in the size of the CAG segment leads to the production of an abnormally long version of the huntintin protein. This causes the dysfunction and eventual death of neurons in certain areas of the brain. The more repeats, the more serious the disease is.
HD is inherited in an autosomal dominant pattern. There is both an adult onset (after reproductive age) and a juvenile onset pattern. People with adult onset typically have 40 to 50 repeats, while people with the juvenile form tend to have more than 60 repeats. Individuals who have 27 to 35 repeats do not develop HD, but they are at risk of having children who will develop the disorder. As the gene is passed on to offspring, the size of the repeat may lengthen into the range associated with HD.
Predict what will happen to the allele frequencies for Huntington’s disease in South Africa if there were a new mutation to the HTT gene that causes a reduction to the CAG trinucleotide repeat. Justify your prediction with evidence. Your response should include links to the sources of information gathered.
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Answer:
If there were a new mutation to the HTT gene that causes a reduction to the CAG trinucleotide repeat, the allele frequency for Huntington's disease would decrease in South Africa. HD is caused by too many repeats of the CAG segment causing an abnormally long version of the huntintin protein which becomes deadly. so if the number of repeats is reduced then the person is more likely to not have Huntington's disease. If they do still develop Huntington's disease, it will be more likely to be adult onset and they will still have an opportunity to reproduce offspring which may carry the trait for reduced CAG.
If a new mutation in the HTT gene were to cause a reduction in the CAG trinucleotide repeat, the allele frequencies for HD in South Africa would likely decrease over time.
What is mutation?A mutation is a change in the nucleic acid sequence of an organism's, virus's, or extrachromosomal DNA's genome. Viral genomes can be made up of either DNA or RNA.
If a new mutation in the HTT gene caused a decrease in the CAG trinucleotide repeat, HD allele frequencies in South Africa would likely decrease over time. This is due to the fact that reducing the size of the CAG segment would result in a lower risk of developing HD.
Individuals with CAG repeats in the range of 27-35 do not develop HD, but they may pass on the mutated allele to their offspring, who may develop the disorder if the CAG repeat size exceeds 35.
Therefore, if a new mutation were to arise that reduces the size of the CAG repeat, individuals who carry the mutated allele would be less likely to pass it on to their offspring.
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tru or false
Do plants lose water
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Answer:
True is the answer of the question
Answer:
True they lose water by the process of Transpiration.
Explanation:
Hope this helped :)
Help me!!!! Please I have been stuck on this for like 1 hour.
Answers
Answer:
Parasitism
Commensalism
Mutualism
Explanation:
These are the answers in order.
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List AND Describe the 2 chemical properties of water
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Answer:
Oxygen and Hydrogen
Explanation:
H2O
H = Hydrogen
O= Oxygen
4) A "black light" uses _______ radiation to make some objects glow.
5) How does a prism separate white light into the different colors that compose it?
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Answer:
4 Black light uses Ultraviolet light
5 As light passes through a prism, it is bent, or refracted, by the angles and plane faces of the prism and each wavelength of light is refracted by a slightly different amount. ... As a result, all of the colors in the white light of the sun separate into the individual bands of color characteristic of a rainbow.
Answer:
ultra violet light
Charles Darwin studied multiple species of finches and tortoises during his time on the Galapagos Islands. His research focused on which level of ecological organization?
Population
Community
Ecosystem
Individual
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A typical bacterium is about one thousands of a metre wide. True or false?
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The tides of the ocean result from the gravitational pull on the Earth by the Sun and
A
B
C
D
Answer is b.the moon
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Explain what would occur if the population of an animal such as a beaver, changes the environment and can increase the number of individuals in that area. In other words, explain how a change to an environment can cause an increase in an animal population.
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Answer: Some changes may cause a population to increase. If there are more plants than usual in an area, the population of animals that eat plants may increase. If one animal's population increases, the population of animals that eat that animal might also increase.
Explanation:
how are bacterias different from animals ?
Answers
Answer:
Bacteria are neither animals nor plants.... Because bacteria are prokaryotic, they do not have a nucleus and no membrane-bound organelles. In contrast, plants and animals are made up of eukaryotic cells, which means they have a nucleus and membrane-bound organelles like mitochondria or golgi apparatus.
Explanation:
Answer:
Bacterias have simple cells and are typically single cell organisms where as animals which have more complex cells are are multi celled organisms UwU
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-Todo <3
Explanation:
Explain 4 ways that invasive species are spread by humans?
Answers
Answer: They may be wind blown, rain splashed, carried by animals, or moved in soil or water. Almost all short-distance spread is through these natural dispersal mechanisms. In their home territory, short distance spread is rarely a problem because the resident plants and animals have evolved to coexist more or less peaceably.
Explanation:
Humans can help in the spread of invasive species.
What is an invasive species?It is a species that is not naturally present in an area ("not native") and when introduced in that area disturbs the ecosystem.For example, Eichhornia crassipes, cane toad, etc.How can human spread the invasive species?Humans can help in the spread of invasive species:
A species is introduced due to its beauty - because of its beautiful flowers and leaf shapes, the water hyacinth was brought to India.It is a contaminant of a species that is introduced - Parthenium is thought to have arrived in India as a contamination in PL 480 wheat from the United States.They may be brought accidentally- Zebra mussels arrived in North America's Great Lakes by accident, clinging to big ships.To control the population of other species - Small Indian mongooses were introduced with the goal of controlling rats that were ruining the sugarcane crop.To learn more about species, invasive species, population and ecosystem here,
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What is the difference between ecosystem and species?
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Answer:
An ecosystem is a collection of species living together in a given environment.
What Rh Factor? Why is it important?
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Explanation:
The Rh factor is one of the proteins on RBCs used to indicate whether the blood of two different people is compatible when mixed – such as blood of a mother and her baby at birth.
It is routine and important that the Rh factor for a mother and unborn child be determined during pregnancy.
Hope this is what you wanted.
A fluke is a small animal that lives in the gut of mammals and takes energy from the mammal. A fluke is a
A. hunter.
B. decomposer.
C. parasite.
D, herbivore.
Answers
Answer:
id say its a parasite
Explanation:
Please only answer if you know and links will be reported
Answers
Answer:
C
Explanation:
the answer is C
Your cells have a unique MHC (major histocompatibility complex). Directions for producing MHCs come from _________________.
A. the helper T-cells
B. the thymus
C. inherited DNA
D. the bone marrow
Answers
The directions for generating MHC comes from the option c. inherited DNA. hence, the option c is correct.
What is MHC?The full form is a major histocompatibility complex. It is the genes group that have the proteins code that should be founded on the cell surface which helped the immune system, that recorded in the foreign substance.
So at the time of directing, it produced MHC that came from inherited DNA.
hence, the option c is correct.
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How does carbon affect the rate of heating(melting )of ice
Answers
Answer:
In the process, the carbon dioxide bonds with, then breaks with, a lot of molecules of water. These broken water molecules weaken the ice and make it more brittle.
Explanation:
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