Answer:
During freezing, water molecules lose energy and do not vibrate or move around as vigorously. This allows more stable hydrogen-bonds to form between water molecules, as there is less energy to break the bonds...Thus water expands as it freezes, and ice floats atop water.
Explanation:
Which human activity is correctly paired with its likely future consequence?
overfishing in the Atlantic - increase in supply of flounder and salmon as food for people
2.
development of electric cars or hybrid vehicles - increased rate of global warming
3
use of fossil fuels - depletion of underground coal, oil, and natural gas supplies
4
genetically engineering animals - less food available to feed the world's population
What is the term for an organism that makes its own source of chemical energy?
protist
B chloroplast
decomposer
D producer
Answer:
D thxs good luck on your test
Explanation:
In an investigation to determine a factor that affects the growth of rats, a student exposed 100 rats of the same age and species to identical conditions, except for the amount of living space and the amount of food each rat received. Each day the student measured and recorded the weight of each rat. State one major error that the student made in performing this
Answer:
Violating 'Ceteris Paribus' {Other factors constant} assumption, as both food & space are varied (simultaneously)
Explanation:
Weight Growth is the dependent (effected) variable in this case. And, independent (causal) variables are food amount are living space respectively.
However particular independent factor's (food or living space) impact on dependent variable ie weight growth : can be determined only by - examining individual variable (food or living space) impact on weight growth. So, either of the two variables should be varied, & not both should be varied simultaneously.
This would imply depiction of each factor's clearer individual impact on the dependent factor.
Need help I am being timed
Answer:
Over time the molecules will spread out evenly.
Explanation:
Answer:
They will reach an equalibrium.
Explanation:
Which of the following are found in DNA,but not RNA?
Answer:Uracil. Uracil is present in RNA and binds to adenine where as thymine is present in DNA and binds to adenine.
A famous celebrity has an extreme security system for their estate. The security system includes sensors in the ground as well as on the sides of the buildings. A loud truck drives down the road entering the estate. There is a sensor in the ground and another on the side of the security guard’s shed. If both sensors are 100m from the truck, which sensor will pick up the noise of the truck first and why?
A.
Guard Shed - The sensor on the security guard’s shed will detect the sound first because the sound is traveling through the air and sound will travel fastest through a gas.
B.
Ground - The sensor in the ground will detect the sound first because the sound is traveling through the dirt and sound will travel fastest through a solid.
C.
Same time - Because the sound is traveling through both the ground and the air at the same time, it will reach both the shed and the ground sensor at the same time.
D.
Neither sensor - 100m is too far for the sound to travel. Neither sensor will pick up the sound of the truck until it is closer to them.
Answer:
B. Ground - The sensor in the ground will detect the sound first because the sound is traveling through the dirt and sound will travel fastest through a solid.
Explanation:
Sound wave is an example of mechanical wave, which means sound waves require a medium to travel through. However, how fast a sound travels is dependent on the kind of medium it travels through. Sound travels fastest via a SOLID medium, then liquid and slowest through gases.
According to this question, sensor in the ground and side of the security guard’s shed were placed in an estate owned by a famous celebrity. A loud truck, then, drives down the road entering the estate.
Based on the principles of sound eaves movement, the sound from the truck will be picked by the sensors in the GROUND first because the sound is traveling through the dirt and sound will travel fastest through a solid.
The small intestine exchanges nutrients to help maintain homeostasis. Through the process of digestion, food is broken down into smaller pieces. Sugar is a molecule that supplies our cells with energy. Sugar is a large molecule and is transported through carrier proteins. Sugar molecules are often transported into the bloodstream even when the concentration of glucose is higher in the bloodstream than in the intestine. Based on this scenario, is the transport of glucose accomplished through osmosis, diffusion, or active transport?
Answer:
Diffusion
Explanation:
The sugar is spreading to various places within the body and is trying to make one place less concentrated.
Based on the given scenario,the transport of glucose is accomplished through diffusion.
What is diffusion?
Diffusion is defined as the process of movement of molecules which takes place under concentration gradient. It helps in movement of substances in and out from the cell.The molecules move from lower concentration region to a higher concentration region till the concentration becomes equal.
There are 2 main types of diffusion:
1) simple diffusion-process in which substances move through a semi-permeable membrane without the aid of transport proteins.
2) facilitated diffusion- It is a passive movement of molecules across cell membrane from higher concentration region to lower concentration.
There are 2 types of facilitated diffusion one is osmosis and dialysis.
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I really need these answers
Answer:
Down There
Explanation:
1) The Bushmaster has the highest mortality rate.
2) The Southern United States Copperhead has the least mortality rate.
3) I can determine that the Bushmaster's venom works the fastest due to it being the one with most deaths produced. While the U.S. Copperhead's venom might work the least since most people survived its venom.
4) The Black-necked Cobra and the Puff Adder
5) 10 types of snakes.
Hope it helps!! :D
Which of the following result in the formation of a dome mountain? Rock layers tilted by vertical subsurface pressure Vertical movements along fault lines Plates colliding causing rock to fold upward together A block of rock lifting at the fault line
Answer: Rock layers tilted by vertical subsurface pressure
Explanation:
Answer:
a
Explanation:
the prefix ad placed in front of a word means what
Answer:
a prefix occurring in loanwords from Latin, where it meant “toward” and indicated direction, tendency, or addition: adjoin.
Are proteins biotic or abiotic? Explain your reasoning. I WILL MARK BRAINLIEST!
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Answer:
girl ummmmmmm,,,,, i need these points so...why did the chicken cross the road? to get to the other BAWK *gets hit by car and dies*
Answer:
joke
Explanation:
once there was a boy that was eating icecream with his grandma he was so concentrated on eating icecream that he bumped on someone and the icecream fall, he wanted to take it from the floor and eat it again, but his grandma said ''no fallen things are no longer edible'' then after a while the grandma felt ill and fell to the floor then she said grandson help me to stand up and the boy says '' no grandma, we cannot peak up fallen things
Where do I put the 4 protons
Answer:
Protons and Neutrons go in the middle
Explanation:
Engineers tasked with building a car bumper need high-quality plastic that is readily available. They found the material polycarbonate, which is long-lasting and not too costly. Which is one technological design criterion they have already met? be available be attractive be durable be safe
Answer:
be durable
Explanation:
From the scenario described the Engineers have met one of the main criteria which is for it to be durable. A design needs to be made with a material that is available, durable, and cheap in order for it to be as efficient as possible while also selling and being profitable. By finding the material polycarbonate they have made sure that the design will be durable as well as cost-efficient since the material is "not too costly". Now if they are able to acquire the material in large quantities then they would have met the availability criteria as well.
Answer:
The answer is C
ignore my answer....
Answer:
Explanation:
lol okay the anwser is D
How long does it take for a jellyfish to reproduce
Answer:
A jellyfish might spend one year as a medusa, but it can spend several years in the polyp stage. Polyps are stationary and reproduce asexually. The method of reproduction used by jellyfish polyps is known as budding, and it does look like a plant growing a new bud for a flower.
How do active and passive transport help a cell respond to changes in the environment?
Active and passive transport help a cell in responding to the changes in the outside environment as both of these processes help in transporting substance into and out of the cell and maintaining the homeostasis in cell.
What is Cellular transport?
Cellular transport is the process of transportation of substances into and out of the cell. Cellular transport includes different processes such as active and passive transport. The active transport requires energy for transporting substances against the concentration gradient and the passive transport does not require energy as the substances move in the direction from high concentration to low concentration of solutes.
The transport of substances which are required by the cell and excretion is possible through active and passive transport. these processes helps in maintaining homeostasis in the cell.
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Iron reacts with sulfur to form iron sulfide. If 60 grams of iron reacts with sulfur to produce 90 grams of iron sulfide, how much sulfur has been used in the chemical reaction?
A.
60 grams
B.
150 grams
C.
120 grams
D.
30 grams
Answer:
Its D. 30 grams:)
Explanation:
how many atoms of nitrogen are in a chemical formula Ni(NO3)2?
O 3
O 2
O 1
O 6
Answer:
2
just did test
Explanation:
If excessive amounts of hot water are discharged into a lake, the immediate result will most likely be
Answer:
all of the wildlife within the lake would go into shock
Explanation:
wildlife such as fish go into shock very easily when it comes to change in temperatures! a goldfish dropped straight from it's baggy into a bowl is far more likely to go into shock and die than one who was adjusted to the water temp first.
ANSWER ALL THE QUESTIONS
THE QUESTIONS IS ON THE PHOTO
Answer: (1.) several hierarchical levels in an ecosystem, that share the same function in the food chain and the same nutritional relationship to the primary sources of energy (2.) that only ten percent is available to the next level
Explanation:
What supports, protects and maintains the shape of the cell? *Very rigid. *
A .golgi apparatus
B. cytoplasm
C. endoplasmic reticulum
D. cell wall
Answer: D. the Cell wall
Explanation: The cell wall provides structural support and protection. Pores in the cell wall allow water and nutrients to move into and out of the cell. The cell wall also prevents the plant cell from bursting when water enters the cell.
Also it is also a ridged layer found outside of the cell membrane
What’s the biggest change in skull anatomy that occurred from the dawn of horse to the modern horse
Answer:
Each skull has a large diastema, or gap between the front and back teeth. 2. What is the biggest change in skull anatomy that occurred from the dawn horse to the modern horse? The size of the skull is dramatically larger in the modern horse.
Explanation:
The main change in skull anatomy that occurred from the dawn horse to the modern horse is that the skull of the modern horse is dramatically larger.
What are the characteristics of the dawn horse?Eohippus, (genus Hyracotherium), also called dawn horse, an extinct group of mammals that were the first known horses. They flourished in North America and Europe during the early Eocene (56-33.9 million years ago).
Eohippus, "dawn horse" or more correctly called Hyracotherium, which lived in the Eocene approximately 55-58 million years ago, is the oldest ancestor of the modern horse.
Hyracotherium, or eohippus (dawn horse), as scientists called it, first appeared on earth as a small, shy creature no bigger than a dog. It existed between 55 and 5 million years ago.
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Which trait can be passed from one generation to the next by genes? A. The ability to speak German B. Red hair color C. A broken arm D. A shaved head
Plz help me
Answer:
Red hair color
Explanation:
i promise you im right.
Answer:
red hair color.
Explanation:
because red hair is a gene that you can get from you parent or some other family members. a shaved head you cut, speaking german is a trait YOU learn and that you don't get from a member of your family
Which of the following shows an unsaturated fatty acid?
Answer:
I belive the answer is B or C
Explanation:
Answer: its D
Explanation: i got it wrong cause of these guys
explain the relation between cell tissue organ and system
Answer: Animals and plants are made of cells. Tissues are made from cells of a similar type. Organs are made from tissues, and systems are made from several organs working together.
Explanation:
Answer:
In plants, just as in animals, similar cells working together form a tissue. When different types of tissues work together to perform a unique function, they form an organ; organs working together form organ systems.
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Which form of precipitation would you predict when you see a cloud shaped like a column in the sky during the summer at an above freezing temperature? (2 points)
Group of answer choices:
Heavy rain and hail
Light rain, sleet, and snow
Heavy snow and strong winds
Clear skies with no precipitation
Answer:
light rain sleet and snow
A)
Column shaped clouds usually mean that heavy precipitation is on the way.
A fair amount of the world's precipitation falls as snow or some other solid water form. Actually, outside the tropical regions, it is likely that the much of the precipitation begins in the solid form and only becomes liquid rain when it melts while falling through air with temperatures above freezing.
Pls I need these answers ASAP
Answer:
Okay, from what i understand, you should make a column with the kind of snake, and another one with Mortality percentage from the venom of those snake's bites.
Use the numbers to guide yourself... for example
Kind of Snake I Mortality Percentage
(1)southern United States copperhead I (1) less than 1%
write one sentence using both words in the pair.
Taiga, swamp
Answer:
I went to visit a Taiga, which can sometimes be like a swamp.
What's the function of prop roots?
Explanation:
plays a substantial role in endowing certain plants with extra structural support.
Answer: The roots of a plant function in many different ways, including absorbing nutrients and water, providing anchorage, and acting as a food storage site.
Explanation: