Sugar and salt are examples of soluble substances. Substances that do not dissolve in water are called insoluble. Sand and flour are examples of insoluble substances.
Chalk is insoluble - it does not dissolve in water.
Answer:
Sprite.
Explanation:
You can tell it hasn't dissolved because the bubbles inside the bottle have not gone away.
Which characteristic did the ancient Greeks believe most distinguished them from "barbarians"? * A.Religion B. Skin color C.Language D.Dress E.Hairiness
Answer: It is A religion
Explanation: I got it right on the assignment.
Organ systems in the human body perform vital functions. Which organ system directs all the other organ systems and is the control center of the human body?
a. nervous system
b. RespiratorySystem
c. Circulatory System
d. Reproductive System
How do Newton’s laws of motion explain why it is important to keep the ice smooth on a hockey rink so that players can pass a puck as quickly as possible?
Smooth ice reduces the inertia of the hockey puck.
Smooth ice increases the force used to accelerate the hockey puck.
Smooth ice reduces the unbalanced forces that would slow the hockey puck.
Smooth ice decreases the reaction force that the ice exerts on the hockey puck.
It is important to keep the ice smooth on a hockey rink because this reduces the unbalanced forces that would slow the hockey puck.
Frictional forcesFrictional forces are opposing forces to the motion of an object on a platform.
In order to be able to pass a puck as quickly as possible on a hockey rink, there should be a minimal frictional force on the ice surface on which the puck moves.
With minimal opposing forces, the puck will move as unhindered as possible and passing as fast as possible would be easy.
More on frictional forces can be found here; https://brainly.com/question/1714663
Answer:
C
Explanation:
1) Which interaction illustrates a terrestrial-aquatic food relationship? *
O A. A bear eating a fish in a river
O B. A turtle burying eggs in the sand
O C. A fish eating plankton in the ocean
O D. A bird laying eggs in a nest in a tree
What is one way people have negatively affected land resources?
A) Habitat restoration
B) Urbanization
C) Terrace farming
D) Reforestation
Answer:
b
Explanation:
Urbanization is one way people have negatively affected land resources. Therefore, the correct option is B.
What is Urbanization?The process of urbanization occurs when the percentage of a country's population living in urban areas increases. This is a result of rural-urban migration, which occurs when people move from rural to urban areas in search of better job prospects, social services, and living standards. Urbanization has both beneficial and harmful effects on the environment and society.
On the plus side, urbanization can promote economic growth, better infrastructure, and greater access to social services, including healthcare, education, and social assistance. Additionally, it helps reduce stress on rural communities, which may experience issues of resource scarcity, resource overabundance, and environmental degradation.
Therefore, the correct option is B.
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If you could be any animal, what would you be? And why?
Answer:
A cat
Explanation:
Because if I were a pet cat at least someone would take care of me and I would not have to do any real things like responsibilities.
Could someone help me on question 15 and17 pls
Answer:
I believe 15 is Vomit since it's the other way of how to say throw up that starts with a V. And I'm pretty sure 17 is Digestive system.
Hope this helps :)
How does genetic variation help a species survive through an environmental change
Answer:
Look at explanation
Explanation:
Genetic variation helps a species survive through environmental changes because some individuals can adapt to a changing environment. Genetic variation allows more variations within phenotypes.
Which factors would not decrease population and biodiversity?
a-high birth rates, low mortality rates
b-hunting of keystone species
c-a competitive invasive species
d-diseases and natural disasters
e-carrying capacity and limiting factors
e-carrying capacity and limiting factors
Lava is rock that has undergone a physical change and has liquefied. What is known about this change?
The lava gained mass.
The lava was burned into smoke.
The lava can cool back into rock.
The lava lost mass.
Answer:
The lava can cool back into a rock
Explanation:
Physical changes can be reversed. Hence, the lava can cool back into rock.
What are physical changes?Physical changes are changes that happen to the physical properties of materials only. They are usually reversible when subjected to appropriate conditions.
In this case, the lava rock changed from a solid to a liquid as a result of melting at high a temperature. Once the liquefied rock is cooled, it will return back to being solid.
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In addition to liquid precipitation, which are present when freezing rain occurs?
please help me only if you really know i will mark brainly
Answer:
A. Lactic acid.
Explanation:
The Devils Hole pupfish is one of the world's rarest fishes, spending most of its life in the top few meters of very warm waters of a cavern located in the middle of the Mojave Desert. Devils Hole,
a geologic pool, is the only naturally occurring habitat for the endangered Devils Hole pupfish. This fish's habitat is one of the smallest natural ranges known for any vertebrate. Devils Hole is an
extreme environment, with water temperatures and dissolved oxygen concentrations near the lethal limits for most fish species.
Which of the following statements best explains why the Devils Hole pupfish are able to live in this environment?
Answer:
Thermal invasive
Explanation:
Devils Hole pupfish can live in this environment because they have adapted genes, which offer resistance to their bodies to the harsh environment where they live.
We can come to this answer because:
A living being can only live in an inhospitable environment if its organism allows for an adaptation.In this case, we can say that Devils Hole pupfish had a population with different genetic compositions, where some had genes adapted to this environment and others did not have these genes.Devils Hole pupfish that didn't have the adapted genes didn't resist the environment and died.The Devils Hole pupfish that possessed the genes survived and passed those genes on to their descendants.In this case, Devils Hole pupfish that received the genes adapted to the environment developed resistance that allows them to live amidst extreme resources.
More information:
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A clear sign that a subduction zone occurs in the ocean is the existence of a ______________________. *
Answer:
Where two tectonic plates converge, if one or both of the plates is oceanic lithosphere, a subduction zone will form. An oceanic plate will sink back into the mantle. Remember, oceanic plates are formed from mantle material at midocean ridges.
the first living organism on earth was probably a(n) ___ because the fossil remnants indicate a single-celled prokaryote.
1.- How does photosynthesis contribute to the survival of humans?
2.- Explain the effect cyanobacteria had on the early atmosphere of Earth and the evolution of life?
3.- Suppose chromosomes in skin cells are damaged by ultraviolet radiation. If the damaged gene does not affect the cell cycle, do you think the cell will become cancerous?
4.- How is mitosis involved in the healing of a wound?
5.- How is the cell cycle-related to the growth and maintenance of an organism?
6.- What role does differentiation play in the cell cycle?
7.- Explain the connection between the cell cycle and cancer development?
8.- Must the cell cycle always proceed in the same direction, or is it possible for the cell cycle to proceed in the opposite direction? Explain your reasoning.
9.- Explain how crossing over provides evidence to support the claim that meiosis increases genetic variation.
10.- Why is it important that human gametes have half a set of DNA instead of a full set of DNA?
11.- In what ways is ATP like a fully charged battery?
Answer: By storing carbon above and below the ground, the trees and plants in forests contribute to the production of oxygen as a byproduct of photosynthesis. ... Photosynthesis provides most of the oxygen that humans and animals breathe.
The mitochondria is known as the “powerhouse of the cell." Why?*
glucose is broken down into cellular energy (ATP).
lipids release energy as they form polypeptide bonds.
glucose is created through the process of photosynthesis.
proteins create energy as they are converted from sugars.
Answer:
The correct answer is - glucose is broken down into cellular energy (ATP).
Explanation:
Mitochondria is the double membrane cell organelle presents in all eukaryotic cells that produce the energy by the process of cellular respiration from the food to the cell to perform its day to day functions.
The cellular respiration is the process that involves the braking of the sugars into simple molecules and these catabolic reaction produce energy with CO2 and water as waste. The energy is stored in the form of ATP which is generated in the inner membrane of mitochondria. ATP is used by the cell to perform its function.
Thus, the prower house of the cell is mitochondria.
What are the two most influential abiotic factors in determining biotic factors of an area?
Answer:
Grazing and predation are biotic factors; pH and temperature are abiotic factors.
Explanation:
Hope this helps.
What is a mixture in which all the components are evenly spread out?
Answer:
A mixture is made when two or more substances are combined, but they are not combined chemically. There are two main categories of mixtures: homogeneous mixtures and heterogeneous mixtures. In a homogenous mixture all the substances are evenly distributed throughout the mixture (salt water, air, blood).
Answer:
homogenous mixture
Explanation:
A mixture is made when two or more substances are combined, but they are not combined chemically. There are two main categories of mixtures: homogeneous mixtures and heterogeneous mixtures. In a homogenous mixture all the substances are evenly distributed throughout the mixture (salt water, air, blood).
FOR A TEST!!
TRUE OR FALSE??
Consumers in an ecosystem get food molecules for cell respiration by eating other organisms including producers. Then, they perform cell respiration to use energy in food molecules to make ATP.
20. Perspiration leaves the body through the
O collecting ducts
O nephrons
O sweat glands
O kidneys
A particular mouse found in northern Canada has a light gray coat in the colder winter months but in the summer months has a dark brown coat. What can you say about this change?
Answer:
It changes based upon the weather for camaflouge
Which statement best explains the importance of enzymes lowering the activation energy necessary for reactions to take place?
a Reactions that require less energy to begin are able to occur more quickly.
b Reactions produce heat, causing the chemical bonds to become strong.
c Reactions are able to proceed slowly to maintain the metabolism of the cells.
d Reactions requiring less energy are able to produce less product.
Answer:
A
Explanation:
because a enzyme simply speeds up a reaction and only does that by pressure and stress not by doing chemical changes
The statement which best explains the importance of enzymes lowering the activation energy necessary for chemical reactions to take place is: A. Reactions that require less energy to begin are able to occur more quickly.
A chemical reaction can be defined as a chemical process which mainly involves the continuous transformation or rearrangement of the ionic, atomic or molecular structure of a chemical element through a break down and formation of chemical bonds, in order to produce a new chemical compound.
As a general rule, the activation energy of a chemical reaction must first of all be reached by its combining chemical elements (reactants) before it can start or begin.
An enzyme can be defined as a biological catalyst that is used to speed up (increase) or catalyze (accelerate) the rate of a chemical reaction, by lowering (decreasing) the activation energy of its constituent chemical elements (reactants).
Hence, a chemical reaction that only require less energy to begin (start) are able to occur more quickly before those that require high energy.
In conclusion, the activation energy of a chemical reaction should be lowered in order for it to occur or take place fast (quickly) enough over a short period of time.
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A medical test indicates that a patient has a defective protein. This condition is most
likely due to a change in the directions coded in the:
Answer:
the hereditary unit, gene
A solution with a greater number of hydrogen ions (H+) than hydroxide ions is called a(n)
Answer:
An acid is a solution with more H+ ions than OH- ions.
Explanation: I'm pretty sure acid is correct, if not I'm very sorry.
:D
4. Classity as man-made or natural extinction: Habitat Destruction, removal of natural habitats.
Both
Neither
Man-made
Natural extinction
answered
Whats TWO Answer Giving Brainliest To first Correct AnSwEr:D......... please help :C
Answer:
c
Explanation:
Answer this question please!!
Which of the following lists the two particles found together inside the nucleus of an atom?Photons and ionsNeutrons and electronsProtons and neutronsElectrons and protons
Answer:
protons and neutrons.
Explanation:
CAN SOMEBODY PLSSSS STILL ANWSER I NEED THIS ASAP BIOLOGY HELP!!!!!!!!!!!!!! BRAILIESTT
Question 32:lipids
Question 33:Chemical bonds
Plant c
question 35: Type A or Type B
