Answer:
120 joule.
Explanation:
Given
For the stone X
Mass (m) = 2 kg
Height (h) = 2 m
Acceleration due to gravity (g) = 10 m/s²
Then we have the formula to calculate the potential energy
P.E 1 = mgh
= 2 * 10*2
= 40 joule
Now for Stone Y
mass (m) = 4 kg
height (h) = 4 m
acceleration due to gravity (g) = 10 m/s²
Now
P. E2 = mgh
= 4 * 10* 4
= 160 joule
Now the difference between their potential energy is
= P. E2 - P. E 1
= 160-40
= 120 joule
Hope it will help you :)
What is inheritance in biology
Answer:
passing of traits
Explanation:
Inheritance is the act of passing traits through sexual or asexual reproduction.
Which are the following statements are TRUE when concerning cells?
A: Prokaryotic cells can only produce eukaryotic cells
B:All cells come from pre-existing cells
C:Cells must always reproduce with other cells
D:Plant cells can only reproduce with animal cells
Answer:
I think it will option b hope it helps
Answer this please I promise 30 points + mark as brainliest ( only relevant answers )
Answer:
A) Group X = Rose ,mango tree,marigold,palm tree
B) This is the answer of group X =Rose ,mango
This is the answer of group Y =Fern ,pine trees
Explanation:
Answer:
jen, from my heart im saying i lu.v u for real
its been almost 5 months weren't having the same old c.hat we used to have.
ik that ur scared to c.hat with me since the day ur mom caught u
but still the old memories keep coming into me how many times i try to forget u, i still lu.v u jen still lu.v u
and as i made u a promise that one day we'll meet, i still keep thqat word and that day even if its just one day, we're gonna enjoy the max we could
i'll be waiting for that moment and i hope u would be too...
still lu.v u :( .......
Can someone please helpppppo I’ll mark the brainliest
Answer:
C [the third one btw]
Explanation:
He believed that evolution gradually [slowly] happened over time.
Hope this helps :D Have a great day
How could one determine if two
unidentified organisms share a common
ancestor?
Answer:
Evolutionists determine that two organisms have a common ancestor is by looking at fossil evidence in different rock layers using the law of Superposition (Oldest layers are on the bottom, newest are on the top) and compare the skulls or other bones to each other in order of oldest to newest (or newest to oldest). Another way to determine this is to examine the amount of DNA a certain species shares with another species. An example of this would be that Humans share roughly 90% of our DNA with chimpanzees or the other Great Apes.
Explanation:
DNA
They can look at the DNA it's the most common one.
There are 4 pieces of evolution and they are
Fossils , Geography , Embryos / DNA , Anatomy
Fossils: Physical remains of species , Determine age, location, environment
Deeper layers = older
Geography: Proves species share common ancestors, depending on where
they live
DNA: BEST evidence because it’s the MOST ACCURATE
Similarities in the early stages of development
Similarities in DNA
More similarities = closely related
More differences = not related
Anatomy: Compare body parts of different species to see how they evolved
3 different structures:
Homologous (same structure, different function)
Analogous (similar structure, different organisms)
Vestigial (body parts that no longer serve a purpose)
All of that are in evolution
Hope it helped! ( Gave u my biology notes :D)
What biotic factors might affect a population of fish? Check ALL that apply.
predators
prey
light
bacteria
Answer:
Explanation: Abiotic factors for fish is water, temperature, amount of dissolved oxygen in water, etc. Penetration of sunlight is also important in fresh water habitat. Biotic factors are predators, disease causing organisms, organisms available as food, population density of competitors, etc.
Explanation:
what is reduced soil?
Answer:
A chain of reactions is initiated upon soil flooding leading to reduced (low) soil redox potential (Eh, mV) conditions. These reactions include physical, chemical and biological processes that have significant implications for wetland plants.
how do gray whales migrate?
Answer: Grey whales travel 12,000 miles round-trip from their feeding grounds in the Arctic to calve and breed in the Baja lagoons, and then back again.
Explanation:
How do adaptations lead to change?
What is the phase change from gas to liquid?
A. Sublimation
B. Condensation
C. Vaporization
D. Transpiration
Answer:
Condensation
Explanation:
Condensation is the phase change from gas to liquid. For example, water vapor condenses when you are taking a shower because wet spots show up on a mirror after taking a shower.
Answer:
Condensation
Explanation:
Sublimation is when a solid turns into a gas. Condensation is when water in the air collects to form droplets that gather on a surface/object. Vaporization is when a liquid forms into a gas. Transpiration is a thing in plants where water transfers throughout the plant.
Which of the following solutions is neutral?
Group of answer choices
a solution with a pH of 14
a solution with a pH of 2
a solution with a pH of 7
a solution with a pH of 9
Flag this Question
Question 4
Potassium hydroxide has the chemical formula KOH. It feels slippery and is used in cleaning liquids. Based on this description, potassium hydroxide is most likely a(n)?
Group of answer choices
acid
base
neutral solution
pH indicator
first to answer gets the brinllest
Answer:
Kleenex
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1. Carbon is a very important element in biology. What are some of the reasons that organisms need carbon? please help me
Answer:
"All living orgasms contain carbon and all virtual molecules in the body contain carbon, sugar, DNA, proteins, Fats..."
Explanation:
Hope this helps :)
You are working in a lab trying to identify a single celled organism. You are not
sure if it is a Protist or a Moneran (Eubacteria or Archaebacteria). What test
would be most useful to determine its identity?
A. Put it in the sun and measure the oxygen levels
B. Determine if it is motile
C. Test its cells for chitin
D. Determine if it has a nucleus
The test that will be most useful to determine the identity of the single-celled organism is to "determine if it has a nucleus".
DIFFERENCE BETWEEN A PROTIST AND MONERAN:
A protist is a member of the kingdom protista characterized by it's single cells and eukaryotic nature.
On the other hand, a MONERAN is a member of the kingdom MONERA and characterized by it's unicellular and prokaryotic nature.
The major difference between Monera and protista is their prokaryotic and eukaryotic cells respectively. Prokaryotic cells do not have a membrane bound nucleus while an eukaryotic cell does.
Since the major difference between Monerans and protists is their possession of a membrane bound nucleus, the identity of the single-celled organism is to "determine if it has a nucleus".
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which layer of the earth is made out of melted metal?
The outer core. A molten nickle- iron alloy.
Need help. brainliy to the first person that answers is right telling why
Pls I need answers at least one answer of any of the questions
NEED HELP WITH THESE 4 QUESTIONS WILL GIVE BRAINLIST!!!
1.What were some characteristics that the finches developed to give them an advantage in surviving?
2.How do you think that the one species of finch evolved into many different species, each with its own advantages?
3. In what ways do these advantages help the finches to survive and reproduce?
4. What might have happened if the finches didn't evolve into many different species?
Answer:
1. Because the drought reduced the number of seeds and finches with bigger beaks were able to eat the larger and harder seeds so more of them survived.
2. Summary: Changes in the size and form of the beak have enabled different species to utilize different food resources such as insects, seeds, nectar from cactus flowers as well as blood from iguanas, all driven by Darwinian selection
3. Medium ground finches with larger beaks could take advantage of alternate food
4. three species of Darwin's tree finches have been known to inhabit Floreana but no birds singing that song on Floreana have been heard in many years.
Explanation:
correct order of events during the process of nucleosynthesis?
Answer:
hydrogen nucleus formed, isotope of hydrogen, tritium formed, helium nucleus formed
Explanation:
Answer:
A
Explanation:
took the quiz
Please help As fast as you can!
The formation of an ionic bond involves the
Select one:
O sharing of neutrons.
sharing of protons.
transfer of neutrons
transfer of electrons
Answer: transfer of electrons
Explanation:
How does the size of a bacterial cell compare with an animal cell?
Answer:
hope it helped
Explanation:
Bacterial cells are very small - about 10 times smaller than most plant and animal cells. Most bacterial cells range in size from 0.2 to 10 microns or micrometers (0.0000079 to 0.00039 inches). ... One reason why bacterial cells are so small is that they need a large surface area to cell volume to take in nutrients.
When the northern hemisphere points toward the sun, the southern hemisphere faces away from the sun. In this instance, it is:
A.
summer in North America, and winter in Australia.
B.
summer in North America and Australia.
C.
winter in North America, and summer in Australia.
Answer:
A
Explanation:
the northern hemisphere is the opposite from the southern hemisphere
Since northern and southern hemisphere are in opposite directions therefore, option (A) is correct.
Why are the seasons reversed in each hemisphere?The axis of rotation of the Earth is inclined with regard to the plane in which it orbits the sun. This is the root reason of the changing of the seasons. When the axis of the earth is aligned with the sun, summer arrives in that hemisphere of the planet. Expect winter to arrive when the axis of the earth is tilted away from the sun.
Different places of Earth receive the Sun's most direct rays throughout the year. When the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. When the South Pole tilts toward the Sun, the Northern Hemisphere experiences winter.
Learn more about seasons, here:
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Which of the following processes cycles matter through different parts of an ecosystem?
More than one answer may be correct.
1. the nitrogen cycle
2. the water cycle
3. the carbon cycle
Answer:
the nitrogen cycle, the water cycle, and the carbon cycle
Explanation:
The water, carbon, and nitrogen cycles move nutrients through the different parts of an ecosystem. Water moves through organisms and the environment in different phases. Carbon moves through an ecosystem in carbon dioxide, minerals, and organic compounds. Nitrogen moves through an ecosystem in nitrogen gas, ammonium, nitrates, and organic compounds.
The biogeochemical cycle is a pathway that circulates the chemicals through the abiotic and the biotic factor. The nitrogen, water, and carbon cycle through various regions of an ecosystem.
What is a biogeochemical cycle?The biogeochemical cycle is the movement of the chemicals and compounds of carbon, nitrogen, and water in the biosphere (biotic) and the atmosphere, lithosphere, and hydrosphere (abiotic) spheres of the earth.
These cycles move the nutrient through different spheres in the form of inorganic and organic compounds. It is an essential part of the ecosystem as they regulate the flow of the natural elements.
Therefore, option 1. nitrogen cycle, option 2. water cycle, and option 3. carbon cycle move through various parts of an ecosystem.
Learn more about biogeochemical cycles here:
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Substances containing mercury would be classified as
Answer:
Toxic waste
Explanation:
Toxic waste are chemical substances which are poisonous, can cause cancer, can cause birth defects and may lead death or severe ailment. Toxic waste can lead to poisoning occurs when ingested, inhaled, or absorbed by the skin.
Examples of toxic wastes are Lead-Acid Battery, Mercury (mercury pollution), Pesticides Pollution, Arsenic in Ground Water etc.
Mercury vapors can cause neurological and behavioral disorders like tremors, emotional instability, insomnia, memory loss and so on.
When is carbon dioxide released during aerobic cellular respiration?
Answer:
I hope this helps and rate it if its right
Explanation:
I hope this helps and rate it if its right
how do vital signs allow medical professionals to assess a patient's physiology and overall health
they measure the pulse rate and blood pressure of a patient, these can help to determine if a patient has any diseases of the blood or if they are under stress.
True or false: recycling can positively impact Earth's spheres.
Answer:
true
Explanation:
Answer:
True
Explanation:
Recycling provides big benefits to the planet's atmosphere by reducing overall materials consumption. ... The more we recycle, the more we reduce the impacts of global warming on the earth's climate. Animal Safety. Ocean-dwelling animals are threatened by the large amounts of plastic trash dumped into the seas every year.
What are 3 lines of evidence that corroborate the theory of evolution?
Answer:
Lines of Evidence supporting theory of evolution by natural selection: Fossil evidence, Biographical evidence and Anatomical evidence.
Explanation:
I majored in Biology
Can someone help me thank you!!
Answer:
CARBON
Explanation:
how does the respiratory and digestive system work together to maintain homeostasis
The respiratory system brings oxygen into the lungs when you breathe. The digestive system breaks food down into nutrients such as glucose. Now the circulatory system enters the picture. It transports glucose and other nutrients from the digestive system to the cells.
HOPE IT HLPS UH WELL✌✌