Explanation:
Platinum, gold and silver are used to make jewellery because the metals used in jewellery are always be chosen on the basis of its reactivity. It should be unreactive so that the metal does not tarnish. Many metals used for jewellery are expensive as well because they are rare.
Which discovery best supports the hypothesis that evolution of the lactase-persistence trait was driven by dairying, the use of milk as a source of adult nutrition in pastoralist cultures
Answer:
The discovery that; The age of pots ( ancient ) that was used to hold milk in ancient times is as old as the Lactase-persistence mutations
Explanation:
The discovery that best supports the hypothesis is given in the question ( The hypothesis about he evolution of the lactase-persistence trait was driven by dairying ) is that The age of pots ( ancient ) that was used to hold milk in ancient times is as old as the Lactase-persistence mutations
10. Explain the gravitational force the Earth has with the moon.
Answer:
Hamilton County Department of Education High School Course markers 9-12, 2002-2003; 4.H.1- Apply the concepts of forces, motion, energy, electricity, and magnetism to the study of the earth and the universe
Explanation:
hope it helps
which provides a definition for matter?
Anything that_
A. is solid and has weight
B.takes up space and is heavy
C. takes up space and has mass
D. is a liquid or solid
Answer:
C
Explanation:
When the particles are equally spaced apart they have reached:
A. Hypertonicity
B. Dynamic Equilibrium
C. Homeostasis
D. Osmolarity
Answer:
B. Dynamic Equilibrium
Explanation:
Since the molecules are still in motion, but an equilibrium has been established, the end result of molecular diffusion is called a "dynamic equilibrium". The end result of diffusion is an equal concentration, or equilibrium, of molecules on both sides of the membrane. At equilibrium, the movement of molecules does not stop.
Answer:
B. Dynamic Equilibrium
Explanation:
When the particles are equally spaced apart they have reached the dynamic Equilibrium.
a goat known for its meat production is the
The Boer goat is a breed of goat that produces meat because of their well-muscled body form and development rate.
Thus, the Boer goat breed, which originated in South Africa, is distinguished by exceptional meat quality and great meat output. Boer goats are highly sought-after for use in the production of meat due to their well-muscled body form and quick development rate.
Compared to other goat breeds, they often have a higher flesh-to-bone ratio, producing meat that is soft and tasty. Boer goats are favored by farmers and ranchers all over the world for their capacity to produce meat since they can adapt to a variety of climates and are disease resistant.
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Please help What part of the blood is responsible for destroying harmful organisms?
A. white blood cells
B. platelets
C. red blood cells
Answer:
the answer is a white blood cells
the killifish is described as having tolerance to pollutants, Is this a
good thing or a bad thing? Explain
Answer:
good
Explanation:
having a tolerance to pollution means that the killfish can tolerate a certain mounts of pollution, so it won't be affected unless there is like a ton of pollution surrounding it
sharpening a pencil, cutting a piece of paper and folding the piece of paper are examples of...
A. chemical change
B. physical change
Answer:
the answer is b: physical change
Sharpening a pencil, cutting a piece of paper and folding the piece of paper are examples of [tex]\sf\purple{physical \:change}[/tex].
B. physical change ✅
Physical change is defined as change in one or more physical properties of matter without any change in it's chemical properties. Since the chemical composition of the above are not altered, they are examples of physical change.[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning}}{\orange{.}}}}}[/tex]
A toad is brought into a new ecosystem. It is stronger than the toads that
already live there and reproduces quickly. Which is the best way to describe
these toads in the new ecosystem?
A. Invasive species
B. Native species
C. Keystone species
D. Cyclical species
Answer:
a
Explanation:
newer, stronger, and reproduces more
this means that the other animals would have to compete and they usually lose.
Invasive species is the best way to describe toads in the new ecosystem. Therefore, option (A) is correct.
What are invasive species?Invasive species are non-native organisms that are introduced to an ecosystem and have negative impacts on the environment, economy, or human health. They typically outcompete native species, reproduce quickly, and lack natural predators in the new ecosystem.
The fact that the toad is stronger than the toads already living there and reproduces quickly suggests that it may outcompete native toads for resources and space. This could potentially lead to a decline in the population of native toads, which could have negative effects on the ecosystem.
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ow do cells use food to make energy and maintain homeostasis
Answer:
Cells obtain energy through the process of cellular respiration. It is a metabolic process of conversion of the biochemical energy from the nutrients into adenosine triphosphate (ATP). ... They exchange substances with the new cells and also eliminate the wastes thereby maintaining homeostasis.
Explanation:
There are several ion transport mechanisms within the cell membrane that function to maintain proper levels of solutes inside and outside the cell. ... This system uses the energy stored in ATP to pump potassium into the cell and sodium out of the cell.
Name three factors that can result in a decrease in the size of a population
Answer:
birth rate,death rate, immigration and emigration
which of the followimg could be reasons why popultion sizes may reach and maintaim plateaus? choose the three that apply
Will mark as brilliant answer
Answer:
Below :D
Explanation:
So basically, this question is asking what will cause a species' population to reach a point where it stops increasing.
Lets think about what can cause a lack of increase?
A decrease can cause this.
Or a slow in the rate of increase.
Now lets look at our selectable answers and see if any of them would fall under these two things.
First up is fewer deaths.
Well, fewer deaths basically means less of a decrease in population.
This is the opposite of decreasing the populatin count, and would instead raise it.
Next we have a limit in food supply.
This would cause a organism to starve and die.
So this would cause a decrease in population count.
So B is one of the answers
Next up is competition with other species.
When two species compete for a sort of resources, one massivly dies out due to outcompetion, and loses the resources needed to survive.
So this would also cause a large decrease in population count.
This makes C one of the answers
Next is increase in birth rates.
This would cause more organisms to be born of a species, basically increasing the population count.
This is the opposite of a decrease in population.
Next we have competition for space.
This is very similar to answer C, and the outcompeted species dies out due to lack of space.
So E is one of the answers
Now, the next answer seems viable, because major storms can kill off organisms, like hurricanes, earthquakes, and volcanos for instance.
However, as seen in many organisms over history, while these major storms kill of organisms, they can recover.
So although major storms decrease populations, they dont actually limit them.
In the end:
B is correct
C is correct
E is correct
Hope this helps!
A city is most likely to experience a change in weather under which of the following conditions?
Answer:
One air mass replases another over the city
.....................
I WILL GIVE BRAINLIST
Answer:
A
Explanation:
The animal kingdom is divided into 31 Phyla and 101 Classes.
6. Most of the ATP creation during respiration occurs as a result of what driving force?
Answer:
This is because Protons are moving down a concentration gradient.
All of these will produce genetic change within a population except -
A random reproduction
B natural selection
C chromosomal mutations
D genetic drift
A trout moves from a warm environment into a cold environment. Predict how the saturation status of hydrocarbon chains might change to ensure proper membrane fluidity in the new cold environment.
Answer:
The correct answer is - The hydrocarbons would become less saturated to increase the fluidity of the membrane
Explanation:
The ratio of saturated and unsaturated fatty acids or hydrocarbon chains is responsible for the membrane fluidity at cold temperatures. Cholesterol is an important part of membrane fluidity as it functions as a buffer, it inserts in phospholipids to preventing lower temperatures from inhibiting fluidity and at higher temperatures stabilizes the cell membrane and increase melting point and prevent increasing fluidity.
Moving from high temperature to low temperature hydrocarbon chains become less saturated in order to increase fluidity as it inserts cholesterols into phospholipids and decrease saturation.
what do you mean by photo synthesis?
Answer:
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Explanation:
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities.
2. Which of the following statements is true?
A Cells don't need nutrients.
B Chloroplasts contain a cell's
genetic material.
C Cells grow and reproduce.
D All nonliving things are made
of cells.
Answer: C. Cells grow and reproduce.
"All cells grow and reproduce. Eukaryotic cells reproduce through mitosis and meiosis, while prokaryotes reproduce through binary fission."
Explanation:
A. "Some essential nutrients are required for cellular function but cannot be produced by the animal body. These include vitamins, minerals, some fatty acids, and some amino acids. Food intake in more than necessary amounts is stored as glycogen in the liver and muscle cells, and in fat cells."
B. "Chloroplasts and mitochondria are subcellular bioenergetic organelles with their own genomes and genetic systems. DNA replication and transmission to daughter organelles produces cytoplasmic inheritance of characters associated with primary events in photosynthesis and respiration."
D. "Instead of cells, a non-living thing is made up of elements or compounds that form from chemical reactions. Examples of non-living things are rocks, water, and air."
What are the chances that your patient’s son will inherit the Alzheimer gene? Refer to your punnet squares to?
From the bar graph generated in the virtual lab (see below), how do the dewlap colors of the
two species compare?
Answer:
What bar graph? I don't see anything
Explanation:
How would your body respond if your blood pH raised to 7.46?
Which type of cell store's its DNA in the nucleus?
A. prokaryotic
B. eukaryotic
Answer:
Hey mate......
Explanation:
This is ur answer.....
A. EukaryoticEukaryotes usually have other membrane-bound organelles in addition to the nucleus, while prokaryotes don't.
Hope it helps!
Brainliest pls!
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Answer:
Explanation:
answer is eukaryotic because proparyotic cell does not have nucleus.
For every human on earth there are about ____________ arthropods.
A) 200
B) 20
C) 1 billion
D) 300 million
thank you for whoever helps! :D
Answer:
300 million
Explanation:
I took the quiz
Which of the following structures stores genetic information in both eukaryotic and prokaryotic cells?
A. Cytoplasm
B. DNA
C. Nucleus
D. Ribosome
Is the following chemical equation balanced?
2Li + 2H2O → H2 + 2LIOH
Why or why not?
A cell has 6 chromosomes. How many chromosomes will each daughter cell have if it undergoes mitosis
Answer:
At the end of mitosis, the two daughter cells will be exact copies of the original cell. Each daughter cell will have 30 chromosomes. At the end of meiosis II, each cell (i.e., gamete) would have half the original number of chromosomes, that is, 15 chromosomes.
hope this helps
have a good day :)
Explanation:
The 3 components of the Cell Theory are only referring to prokaryotic cells.
A. True
B. False
Answer:
B. False
Explanation:
Sunspots are connected with other or events solar hare A solar fare is a sudden release of energy from the Sun, which shoots hot charged partides plasma) from the Sun into
Strical and crcalgids When
Solar harest send enormous amounts of
energy and charged particles that can interact with the Earth's atmosphere. When the charged partides strike the atmosphere they can cause auroras and magnetic storms that can also disrupt
there are more Sunspots, this indicates that the Sun is more active and there will be more solar Hares.
It is under if there is a link between solar activity and changes in the Earth's climate because our planet's climate is influenced by so many other factors such as volcanoes and greenhouse gases. A period of time known as the Maunder
Minimum occurred from about 1645 until 1715. During this time period there yere almost no sunspots. This period occurred at about the same time as a period of cold temperatures known as the Little Ice Age. However, scientists have
not been able to determine if the two phenomen were actually related
Below is a graph of sunspot activity beginning in the year 1600
Which of the following claims would the sunspot evidence from the Maunder Minimum best support?
Moresunspots during this period would have increased magnetic storms.
Fewer sunspots during this period would have caused higher than normal greenhouse gas concentrations
Lower solar activity could have caused colder temperatures on Earth
Greater solar activity could have caused warmer temperatures of Earth.
Answer: I’ve just taken the test
Based on its chemical formula, which of the following substances is an organic compound?