Answer:
B. Water expands when it freezes, so solid water is less dense than liquid water
Explanation:
The molecules of water expands or increases in volume when it is freezed i.e. at a low temperature. This allows the solid state of water (ice) to be less dense than the liquid state (water). Hence, because ice is less dense than water, IT FLOATS. Therefore, in a water body whose temperature is low, the ice component floats on the surface, with liquid water beneath.
Due to this DENSITY property of ice (low) and water, aquatic organisms like fishes are able to survive and live just fine beneath a water body covered with ice. Note that, oxygen is trapped in the liquid portion of the water body underneath the ice covering.
What is found inside of ice core samples that scientists use to determine the composition of the atmosphere at the time the ice was formed?
A. Dust particles
B. Ions
C. Gas bubbles
D. microbes
A. and C.
Explanation:
Ice cores contain evidence of trace elements, gas bubbles, dust, pollen, even viruses and bacteria that can be traced back in time to yield vivid images of Earth's history and prehistory for those who learn to read them.
Gas bubbles are typically found inside ice core samples that scientists use to determine the composition of the atmosphere at the time the ice was formed. Thus, the correct option is C.
What is Atmosphere?An Atmosphere may be defined as a type of layer that significantly consists of numerous gases. It surrounds any celestial body like earth. The atmosphere of the earth is generally composed of about 78% nitrogen, 21% oxygen, and one percent other gases.
During the time, when scientists formed the ice, gas bubbles of carbon dioxide, methane, and other greenhouse gases are significantly present inside the cores of the ice sample.
Apart from this, some sorts of bacteria, viruses, and other microorganisms are also visualized inside ice core samples.
In ancient times, the level of pollution is significantly low, so dust particles are not much highlighted in this region.
Therefore, gas bubbles are typically found inside ice core samples that scientists use to determine the composition of the atmosphere at the time the ice was formed. Thus, the correct option is C.
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what does anerobic mean
Answer:
living, active, or occurring only in the presence of oxygen aerobic respiration. 2 : of, relating to, or induced by aerobes aerobic fermentation
Explanation:
The neuronal serotonin reuptake transporter 5HTT1 is of great interest to the pharmaceutical sector. Your lab has recently isolated two compounds that bind directly to and act as inhibitors of serotonin uptake; these inhibitors have been named L2001 and L2002. Both L2001 and L2002 seem to reduce serotonin uptake 10-fold when added to cells individually. To characterize how L2001 works, your friend has discovered that L2001 does not affect the ability of 5HTT1 to bind serotonin, but instead seems to decrease the rate at which 5HTT1 is able to change its conformation. Another graduate student in the lab has been working on how L2002 affects 5HTT1 and has determined that L2002 acts in a manner consistent with its being a competitive inhibitor of 5HTT1 (i.e. competes with serotonin for its binding site). Given this information, would you predict that adding L2001 and L2002 together to cells would have a greater effect, a smaller effect, or no effect on 5HTT1 transport compared with the addition of only one of these inhibitors onto cells? Explain
Answer:
Adding L2001 and L2002 together to cells would have a greater effect on 5HTT1 transport compared with the addition of only one of these inhibitors onto cells
Explanation:
Due to technical problems, you will find the explanation in the attached file.
The federal program that provides free health care to the poor is a. Medicare. c. Social Security. b. Medicaid. d. the GI Bill of Rights. Please select the best answer from the choices provided
Please Help!!!
Logging trees is often controversial. Why would some people support logging and some people not support logging?
Answer:
1 trees produce paper and you need that to write.
2 it can be for clearing land
why would they not support because there liberals they support Joe Biden.
WHy is water important to life?
Answer:
At heart, all life on Earth uses a membrane that separates the organism from its environment. ... In this regard, water is essential simply because it's a liquid at Earth-like temperatures. Because it flows, water provides an efficient way to transfer substances from a cell to the cell's environment.
If a hurricane destroys a wetland ecosystem off the coast of south Georgia, what kind of succession follows? A.classic ecosystem
B.climax community
C.primary succession D.secondary succession
If a hurricane destroys a wetland ecosystem off the coast of south Georgia, the kind of succession which follows here is secondary succession. Thus, the correct option is D.
What is Secondary succession?Secondary succession is the succession which occurs when the severity of disturbance is insufficient to remove all of the existing vegetation and soil from a particular site. Many different kinds of disturbances, such as fire, flooding, windstorms, and the human activities such as, logging of forests can initiate secondary succession.
Secondary succession occur in regions where life existed at some period of time.
If a hurricane destroys a wetland ecosystem completely off the coast of South Georgia, then the secondary succession will take place in this ecosystem.
Therefore, the correct option is D.
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how do i complete this simple sugar fructose molecule ?
Answer:
If you still need the answer here it is! good luck
1-When you get sick, should you take an antibiotic that a friend or family member offers you (this includes your mom!)? Why or why not?
2- Let's say you're sick and your doctor prescribes you an antibiotic that you have to take for 7 days. If you feel better after 4 days, should you continue taking the antibiotic for the full dose, or stop taking it? Why or why not?
3-If you have a virus, will taking antibiotics cure your infection? Why or why not?
Answer:
1. No! You should only take antibiotics that your doctor prescribes. If you take the wrong antibiotics, or the antibiotics are not necessary, they will not make you feel better and they could contribute to antibiotic resistance by exposing populations of bacteria to antibiotics. This can lead to bacteria evolving resistance genes because of natural selection.
2. No. You must finish the course of antibiotics. By completing the treatment, you increase the odds of killing all the bacteria causing your illness. This means that there are no bacteria left that might develop resistance to the antibiotics
3, No, antibiotics only work against bacteria, and will not work against viral infections. They usually attack the bacterial cell wall, interfere with bacteria reproduction, or interfere with protein synthesis
Explanation:
How does a manager of a business determine what steps to take to make a firm
profitable?
Answer: Learn to Read Financial Statements. Calculate the Profitability of Future Projects. Find Efficiencies in Your Processes. Create Budgets and Stick to Them. Conduct Market Research. Offer Bundled Products. Dedicate Time to Training New Hires. Foster Engagement in Your Employees.
Which of the following is also known as the ecosphere as it is a sum of all the ecosystems?
a.
Atmosphere
b.
Hydrosphere
c.
Biosphere
d.
Cryosphere
Answer:
c. Biosphere
Explanation:
The biosphere, also known as the ecosphere, is the worldwide sum of all ecosystems. It contains all living things above and below the surface of the Earth.
How many elements are included in the following list? NiSAs
Answer:
3
Explanation:
The elements included are Ni, S, and As
choose a plant or animal that you think is interesting. describe some of the threats or challenges
Answer:
If I were to choose an interesting plant or animal, I'd choose a "sloth."
Explanation:
A sloth is a mammal that can be found in tropical forests, particularly in the area of Central America and South America. It is a slow-moving animal (4 m/min. to be exact) that makes it prone to several dangers.
Its slow movement may allow predators to take advantage of it because it can never run or save its own life. It is truly helpless in the face of predators.It spends most of its time hanging in trees; thus, it needs trees for survival. If a wildfire would burn the forest down, then the sloths will be homeless. Being on the ground makes them useless, since their body is made for climbing.It is also prone to being electrocuted, since it often mistook electrical lines as branches of trees.In human newborns, especially premature ones, the blood–brain barrier is not yet fully developed. Why is this one reason to pay careful attention to the diet of infants?
Which of the following is the best explanation for why carbon easily forms
many bonds?
A. Because it forms positive ions
B. Because it has four electrons available for bonding
C. Because it forms negative ions
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D. Because it has six electrons available for bonding
SUBMIT
temperature decreases at high altitude
Answer:
Higher the altitude, the thinner the atmosphere gets. The total heat content of a system is directly related to the amount of matter present, so it is cooler at higher elevations.
Here cooler means decrease in temperature.
the equation for phtotsynthesis
The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.
which feature is characteristic of an upland hardwood forest?
(A) trees that are surrounded by wetlands
(B) trees that form an ecological island
(C) trees that have deep roots
(D) trees that grow in a floodplain
Answer: (C) trees that have deep roots
The characteristic feature of an upland hardwood forest is : ( C ) Trees that have deep roots
An characteristic that makes a forest an upland hardwood forest is the presence of a tree canopy which covers more than 50% of the entire forest area emanating from various tree species present in the forest.
Hardwoods have deep roots which help them to get the necessary nutrients from the soil and this type of root system generally supports the structure of the trees overtime.
Hence we can conclude that The characteristic feature of an upland hardwood forest is Trees that have deep roots
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Which statements describe the importance of the six elements found in all living things? Check all that apply
30 points plz hurryyyyyyy
Answer:
The answer is A,C,D,F
Explanation:
I got it right
Radiant energy from the Sun is very important to life on Earth. It is unique
because, unlike sound waves, it can travel through
Answer:
The sound waves it can travel through the wind
____9. The diagram shows four living organisms.
Which statement about the organisms shown is accurate?
(A) They are all single celled and have similar organs.
(B) They are all single celled and have identical organs.
(C) They are all multicellular and have similar organs.
(D) They are all multicellular and have identical organs.
Which of the following statements is NOT true?
Photosynthesis converts light energy into chemical energy.
Only a few energy conversions are 100 percent efficient.
Batteries change electricity into chemical energy.
Friction between moving parts can add energy to a system.
Answer:
its the second one
Explanation:
Answer:
The correct Answer is C. Sorry I'm a little late but I'm just trying to help people
Explanation:
I got this answer right on my test so I really hope this helps.
It’s is the nature of living organisms to give birth to offspring before they die. What are the two methods used by living organisms?
Answer:
sexual and asexual reproduction im pretty sure
If a patient's total cholesterol is 195 mg/dL and the triglycerides are 215 mg/dL with an HDL of 55 mg/dL, what is the value for the LDL? (2 points) (apex)
Answer: If your LDL is 190 or more, it is considered very high. Your doctor will most likely recommend a statin in addition to making healthy lifestyle choices. Statins are medicines that can help lower cholesterol levels. You may also need to take a statin even though your LDL level is lower than 190.
Explanation:
How could a blood test reveal what foods a person has eaten?.
When a cell grows and develops is called
Answer: Cell Cycle
pls put thanks and mark as the brainliest
what are the functions of the smooth endoplasmic reticulum
Answer:
The smooth endoplasmic reticulum makes cellular products like hormones and lipids.
For a more in depth explanation you could state it's responsible for the synthesis of lipids, steroids, and carbohydrates, as well as the metabolism of exogenous substances, such as drugs or toxins
I cant do this I have no clue
Pond appears to have steam coming off of it after a cold front passes. What is this?
Explanation:
Water is evaporated into another thin film again from pond sample surface. Over the lake, the thin, humid, moist layer is formed then blends with the colder air from of the land. Condensation happens as it cools, and a cloud emerges. It appears like steam emerging from the sea, thus the 'steam fog' nickname
please help giving braineist and 25 points.Write two or more sentences to explain how climate change can affect plants and animals.
Rising temperatures lower many species survival rates due to changes that lead to less food, less successful reproduction, and interfering with the environment for native wildlife.
Rising temperatures lead to more frequent droughts, wildfires, and invasive pest outbreaks, leading to the loss of plant species. That has numerous detrimental effects including: Lowered Productivity: Longer droughts and increased number of heat waves will stress plants, causing them to be less productive