Answer:
dense cloud of interstellar gas and dust
Explanation:
The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. When this dust cloud collapsed, it formed a solar nebula—a spinning, swirling disk of material
Which part of the brain is indicated by the arrow below? (2 points)
Answer:
Cerebrum
Explanation:
what people think about vaccine
Answer:
i don't think the vaccine will help. a lot of people died from it.
Explanation:
changes in the chemical conposition of the atmosphere that may produce acid rain are most closely associated with
Answer:
run off from acid soils.
Explanation:
Acid rain drops on to soil so its mostly associated with acid soil.
The chemical composition of the atmosphere that may produce acid rain is industrial smoke stack emissions.
What is acid rain?Acid rain is the rain that happens due to accumulation of acid rain gases in the environment. Acid rain is very harmful for the environment. The smoke from the factories and vehicles results in harmful gases.
Thus, the correct option is D, industrial smoke stack emission.
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Which terms best complete the chart about characteristics of human development between fertilization and birth? Stages of Human Gestation First trimester Second trimester Third trimester - Embryo develops - Organs begin to develop - (1) - Starts swallowing - Fat begins to develop - (2) - All organs are developed - Can hear and see - (3)
Answer:
Im doing the unit test and i believe the answer is C
Explanation:
It makes the most sense if you have studied.
The stages of human gestation and their time duration are given below:
First trimester: After conception to 12 weeks.Second trimester: Between 12 to 24 weeks. Third trimester: Between 24 to 40 weeks. What do you mean by Fertilization?Fertilization may be defined as a biological event that occurs by the fusion of male and female gametes successfully to produce a zygote.
The embryo develops after four to five weeks of conception which is the first trimester, organs initiate to develop by the end of the first trimester.
Swallowing is initiated at the beginning of the second trimester, and all organs are completely developed by the initiation of the third trimester. While all senses of hearing and seeing are developed by the middle of the third trimester.
Therefore, each trimester is characterized with its own functionality.
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A shipment of 288 reams of paper was delivered. Each of the 30 classrooms received an equal share of
the paper. Any extra reams of paper were stored. After the paper was distributed to the classrooms, how
many reams of paper were stored
Which source of energy is the most important in driving the water cycle? A. Geothermal energy changes water to steam so condensation can occur. B. Wind helps change surface water into water vapor during the process of evaporation. C. Gravity is necessary to pull water downhill when it rains, thus allowing water to flow into rivers and streams. D. The Sun heats up Earth's surface water creating the process of evaporation.
Answer:
D. The Sun
Explanation:
Without the sun, the water cycle wouldn't even start! (No evaporation)
Have a great day!
Answer:
so the ans is sun very easy quiz
What is CRISPR used for?
All but one of the following is a component of nucleus acids. Nucleus acids do not contain
Answer:
Does not contain amino acids
Explanation:
If there are options, please mention.
Thank You
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HELP PLEASE! Choose 3 of the water quality indicators write a summary of what it is
Answer:
Explanation:
Dissolved oxygen (DO)
The DO test measures the amount of oxygen dissolved in the water. Oxygen is essential for both plants and animals, but high levels in water can be harmful to fish and other aquatic organisms.
Water temperature
Aquatic organisms are dependent on certain temperature ranges for optimal health. Temperature affects many other parameters in water, including dissolved oxygen, types of plants and animals present and the susceptibility of organisms to parasites, pollution and disease.
pH
A pH test measures the alkalinity or acidity of water. A pH of 7 is neutral, below 7 is acidic and above 7 is basic or alkaline. Acid rain, from auto exhaust or other pollutants, causes a drop in the pH. Pollution from accidental spills, agricultural runoff and sewer overflows can also change the pH.
Escherichia coli (E. coli)
E. coli is a fecal coliform bacteria that comes from human and animal waste. The Environmental Protection Agency uses E. coli measurements to determine whether fresh water is safe for recreation. Disease-causing bacteria, viruses and protozoans may be present in water that has elevated levels of E. coli. Levels of E. coli can increase during flooding. E. coli is measured in number of colony forming units. The EPA water quality standard for E. coli bacteria is 394 colony forming units per 100 mL.
PLEASE HELP I GIVE BRAINLIEST
D) topaz
Answer: B and C
Explanation: Both are below 6 on the scale so their not as hard or tough.
please help me out with these, which is mitosis and which is meiososis?
Answer:
I think 1. is Mistosis and 2. is Meiosis
What is and allele I need helppppp plssss
Answer:
one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
Explanation:
Answer:
Any one of two or more genes that may occur alternatively at a given site on a chromosome.
Explanation:
Alleles may occur in pairs, or there may be multiple alleles affecting the expression of a particular trait.
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More than 100 years ago, Earth's atmosphere contained about 280 parts per million (ppm) of carbon dioxide. It is predicted that by the year 2050, the level of carbon dioxide in the atmosphere could reach 700 ppm, greatly increasing Earth's temperature. It has been suggested that growing more green plants would help to slow this increase. The best explanation for why increased numbers of plants would help is that plants
Answer: remove CO2 from the atmosphere during respiration
Explanation: I got the question right
Increased numbers of plants will reduce CO2 because plants use CO2 during photosynthesis.
What is photosynthesis?Photosynthesis converts light energy by phototrophs into chemical energy, then used for cellular power activities.Sugars, formed from water and carbon dioxide, store chemical energy.How do plants use CO2 in photosynthesis?Plants fix atmospheric CO2 to store energy as carbohydrates. In the dark reaction of photosynthesis, carbon dioxide is assimilated.CO2 is used in the carboxylation of ribulose bisphosphate during carbon fixation (RuBP). The reaction is catalyzed by the enzyme RuBisCO and is the first step in the Calvin cycle. It produces two molecules of 3-phosphoglyceric acid (3PGA), which is then reduced in a series of reactions to produce glucose, and RuBP is regenerated.Thus, we can conclude that during photosynthesis, plants use CO2 and reduce CO2 from the environment. Therefore, afforestation should be done.
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Select the correct answer.
Which activity does NOT contribute to global warming?
OA.
Driving cars
OB. Releasing gases
OC. Walking
D.
Burning fuel
Reset
Next
the answer is C I believe ><
HELP PLEASE!!! If carrots were removed from the food web, how might the other populations be affected?
There might be more rabbits and foxes.
There might be more grass but fewer owls.
There might be fewer rabbits and foxes.
The rabbits might start eating mice.
Answer:
there might be fewer rabbits and foxes
Explanation:
If carrots were removed from the food web then there might be fewer rabbits and foxes. This is because based on this web, carrots make up 50% of the rabbit's diet. If this is removed, then there would not be enough food to maintain the same size population and the population will begin to shrink. This also applies to the fox population since their main source of food are the rabbits. If the rabbit population decreases, then the fox population will decrease as well since their food supply has shrunk and will not be able to maintain the current fox population size.
write in short about connecting links and embryonic evidence.
Explanation:
hope this will help u.
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Hey can you help me with these questions
1. What occurs across a period of the periodic table?
A number of neutrons decreases
B average atomic mass decreases
C number of inner orbital electrons increases
D number of protons increases
2. How do transition metals generally compare to alkali metals?
A harder
B. fewer electrons in outer shell
C. more reactive
D lower boiling points
Plz help asap
Best answer gets Brainly
Answer:
1. c. because across a period from left to right, the covalent radius decreases. As you move from left to right across the periodic table, atoms have more electrons in their outer energy level and more protons in their nucleus.
2.b. because Transition metals are less reactive than alkali metals because of their high ionization potential and high melting point.
How quickly does the process of excretion occur in plants?
Explanation:
Plants produce two gaseous waste products i.e. oxygen during photosynthesis and carbon dioxide during respiration. Excretion of gaseous waste in plants takes place through stomatal pores on leaves. ... Excess of water is also excreted from the plant body through the stomatal pores and from the surfaces of fruits and stems.
Which of the following is NOT a way in which line is created?
O Dot-to-dot placements
O Use of linear objects
O Sequential placement of materials
O Use clusters of filler materials
Answer:
Use clusters of filler materials
Explanation:
A line can be defined as a one-dimensional figure that is straight, has no thickness (width) but extends infinitely in both directions.
Generally, a line can be created through the use of the following techniques or methods;
1. Dot-to-dot placements i.e distance between two points.
2. Use of linear objects: it involves the use of an object that is straight in shape.
3. Sequential placement of materials.
However, a line cannot be created through the use of clusters of filler materials.
Look at the diagram below. It shows two solutions separated by a partially permeable membrane. Which number arrow shows the direction in which water molecules will move?
Answer:
Arrow no. 4
Explanation:
Water flows from a region of higher concentration to a region of lower concentration, i.e, osmosis.
Dilute solution means it has relatively less solute and more solvent, meaning more amount of water.
And just the opposite for concentrated solution.
So since the dilute solution has more water and concentrated solution has less, and water moves from a region of higher concentration to a region of lower concentration, option 4 is the correct answer.
During the osmosis process solvent is moved from a lower solute concentration to a higher solute concentration, hence arrow 4 defines the movement of water molecules.
What is osmosis?Osmosis is the process through which solvents move from a region of lower solute concentration to one of higher solute concentration across a semi-permeable membrane.
Water in the cell acts as a solvent and moves from lower solute concentration to higher solute concentration through a partially permeable membrane.
Conversely, in diffusion, molecules migrate from an area of greater concentration to regions of lower concentration without the need for a semi-permeable barrier.
Therefore diffusion of water molecules in the osmosis process from low solute concentration to high solute concentration, hence arrow 4 defines the movement of water molecules.
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100 POINTS !!PLEASE HELP!!WILL MARK BRAINLY!!
Answer:
I THINK LOOK FAST AT BOOK IT WAS MINE TOO TEST I CANT UNDERSTAND!
Which does the shift of the hydrogen absorption spectrum of a galaxy provide evidence for? Select the three correct answers.
A. The Big Bang theory
B. temperature of the galaxy
C. motion of the galaxy
D. composition of the universe
E. expansion of the universe
F. number of stars in the galaxy
None sense will be blocked
Answer: b c d
Explanation:
Hkk
The shifts of the hydrogen absorption spectrum of a galaxy provide evidence for :
B. Temperature of the galaxy
C. Motion of the galaxy
D. Composition of the universe
The shifts of the hydrogen absorption spectrum of a galaxy provide evidence for the temperature of the galaxy ,the motion of the galaxy and composition of the universe.Thus, the three correct answers are B, C and D.
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The ____ ____ structure of DNA aid also known as a "________" .
Answer:
I think it is double helix
Based on the data in Table 1, identify the animal that has the greatest number of sequence differences from the reference animal.
Answer:
( please like and hope it helps)
A) Elephas-2 has 13 sequence differences from the reference animal, and this is the greatest number of animals in the table.
B) From left to right, the order at the tips of the cladogram is: Dugong , Elephas , Loxodonta , Mammathus.
(Loxodonta and Mammuthus can also be reversed)
C) The molecular data, such as that for are widely conserved protein such as cytochrome b , show conserved similarities between organisms such as to dugongs and proboscideans and can be used to support the existence of this relationship.
D) The animals that are related ones had a common assister with certain genetic characteristics. Adaptation to different habitats leads to diversification of morphology but does not change evolutionary relationships.
Sequence differences in genes or genomes are used to determine organisms that are most related to each other based on evolution.
What does sequence difference mean?Sequence differences are differences which exists in the entire genome or a gene which code for proteis s whivh are related on function or structure in two organisms.
For proteins performing similar functions, organisms which have the least sequence differences are usually the most related organisms in an evolutionary sense whereas, organisms with the most sequence differences are the least related.
Therefore, sequence differences in genes are used to determine organisms that are most related to each other based on evolution.
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Which of the following symptoms would be typical of a cow experiencing bloat? a)premature birth
b)bulging stomach
c)diarrhea
d)hair loss
if you remove all the water from an RBC, what's left besides a phospholipid bilayer cell/plasma membrane?)
Answer:
Salts, proteins and hormones.
Explanation:
Salts, proteins and hormones are the substances that are present in red blood cells. Plasma of the blood is composed of 90% water, salts, lipids and hormones. It is also rich in proteins such as albumin, immunoglobulins, clotting factors and fibrinogen. These substances are important parts of blood which made the blood to perform its function to transport nutrients in the body so after the removal of water, Salts, proteins and hormones are present in the red blood cell.
The type of alcohol found in alcoholic beverages is _______.
Question 1 options:
Methanol
Rubbing
Ethanol
None of the above
Answer:
Ethanol
Explanation:
can someone help me I'm stuck.
Which of these rights were women looking to gain during the Women's Rights Movement? Select ALL that apply
A The right to vote
B More opportunities for work
C The night to their own identity apart from their husbands
What is the definition of alleles.
Answer:
An allele is one of a pair of genes that appear at a particular location on a particular chromosome and control the same characteristic.
Explanation: