Answer:
Minerals from the topsoil leach down into the subsoil.
Explanation:
Cause the other answer that some uneducted dude put was WRONG, it is not "Volcanic activity heats the rock fragments in the subsoil and releases minerals."
You think that you spot a new planet with your telescope. For the space object to be classified as a planet, you know that it must.
Answer:
D
Explanation:
An example being our solar system. The planets in out solar system orbit around the sun, which is a star. I hope this helps, please mark Brainliest!
1. ASSERTION AND REASONING QUESTIONS:
In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
Mark the correct choice as:
(a) Both assertion (A) and reason (R) are true, and reason (R) is the correct explanation of
assertion (A).
(b) Both assertion (A) and reason (R) are true, but reason (R) is not the correct explanation of
assertion (A).
(c) Assertion (A) is true, but reason (R) is false. (d) Assertion (A) is false, but reason (R) is true
1) Assertion: Atom is electrically neutral.
Reason: A neutral particle, neutron is present in the nucleus of atom.
2) Assertion: Maximum number of electrons that can be accommodated in L-shell is 8 Reason: The formula to find maximum number of electrons in a shell is 2n2.
3) Assertion: For noble gases, valency is zero.
Reason: Noble gases have 8 valence electrons
4)Assertion: The Nitrogen atom loses its 3 valence electrons to form its ion Reason: Nitrogen ion is an anion
II CHOOSE THE CORRECT ANSWER:
1.An atom has 4 electrons and 4 protons and 4 neutrons. The atom is electrically neutral.
Which difference in the properties of protons and electrons affects the electrical neutrality (c) Electrons and protons have opposite charges of the same magnitude
of the atom?
(a)Electrons are 2000 times lighter than protons.
(b) Electrons and protons have the same charge and mass.
(d) Electrons are present in the outer side of the atom compared to the protons..
Answer:
1) B
2) A
3) A
4) D
Explanation:
An atom is neutral because it contains an equal number of protons and electrons. Though the atom actually contains neutrons, this reason does not explain the electrical neutrality of the atom.
The L shell actually contains eight electrons because the maximum number of electrons accommodated in each shell is given by 2n^2 where n is the principal quantum number. Since the L-shell corresponds to n=2 then the reason is the correct explanation of the assertion.
The valency of atoms is determined by the number of electrons in the outermost shell of the atom. Remember that atoms having a filed valence shell(eight electrons in the outermost shell) have a valency of zero. Hence the noble gases possess a zero valency. Thus the reason is the correct explanation of the assertion.
Nitrogen forms its ion by electron gain and not by electron loss because nitrogen forms an anion. This anion is formed by a gain of three electrons. The assertion is false but the reason is true.
How do I know how much energy is availably in each level of the energy pyramid?
Answer:
What Exactly Do Energy Pyramids Have to Do With Energy? Energy pyramids show a very cool trend: Each level only gets 10% of the energy from the level below it.
Explanation:
Which type of body has a core made of ice, dust, and rock?
A. stars
B.meteors
C. comets
D. asteroids
Answer:
C Comets
Explanation:
Which of the following are steps of the inquiry process?
Check all that apply.
A. Summary
B. Prediction
C. Fabrication
D. Observation
E. Invention
ARNEF. Question
Answer:
Understand the problem.
Make a plan.
Carry out the plan.
Look back and reflect.
Explanation:
A heterozygous genotype results in what type of expression of phenotype?
1. Over time, the fish and crab populations have:
A. Decreased
B. Increased
C. Stayed the same
D. Fluctuated up and down.
2. Since 2014 the fish and crab populations have:
A. Decreased
B. Increased
D. Stayed the same.
1-D
2-A
this is due to pollution
what kind of energy transformation takes place when plants perform photosynthesis to produce glucose molecules
Answer:
electrical energy
Explanation:
electrical energy
A generator converts kinetic energy into electrical energy.
The Peruvian Rosewood (Micrandra spruceana) plants are rare and not ideal for cultivation. If we can identify the enzymes that produce spruceanol we can produce this antimalarial compound in another species that can be efficiently cultivated. What would you have to insert into the host species to produce spruceanol in large quantities so it can be used as a drug
Answer:
Gene.
Explanation:
Gene which is responsible for the production of spruceanol in the Peruvian Rosewood plant can be inserted in the host species in order to produce spruceanol in large quantity so that we can used it as a drug that can cure antimalarial disease. There are certain genes that are responsible for the production of spruceanol in the Peruvian Rosewood plant so if we want to produce this spruceanol in other plants we have to transfer this gene to the host plant.
4.
(06.02 LC)
Which of the following is a specialized cell that can recognize a hormone's chemical structure? (5 points)
Nerve cell
Smooth cell
Striped cell
Target cell
5.
(06.02 MC)
What happens when blood glucose levels rise above normal? (5 points)
The pancreas releases insulin.
The pancreas releases glucagon.
The pituitary gland releases insulin.
The pituitary gland releases glucagon.
6.
(06.03 LC)
Which process describes the passing of nutrient molecules from the digestive system into the blood? (5 points)
Absorption
Chemical
Elimination
Mechanical
7.
(06.03 LC)
Which of the following is a part of the digestive system? (5 points)
Capillary
Diaphragm
Ovary
Saliva
8.
(06.03 MC)
The following flow diagram shows the various steps of elimination of waste through urine. There is an error in one of the steps. (5 points)
A flow diagram is shown with three rectangular boxes. Each box from top to bottom is labeled Step 1, Step 2, Step 3. The text written inside the top rectangular box reads, Urine flows from the ureters to the kidneys. The text written inside the middle rectangular box reads, The Ureters carry urine to the urinary bladder. The text written inside the bottommost rectangular box reads, Urine leaves the body through urethra. The title of the flow diagram is Elimination of Waste.
What is the error in the diagram?
Step 1 should be urine flows from the kidneys to the ureters.
Step 2 should be the kidneys carry urine to the bladder.
Step 2 should be the ureters carry urine to the urethra.
Step 3 should be urine leaves the body through kidneys.
9.
(06.04 LC)
Which of the following is a lower chamber of the heart? (5 points)
Atrium
Pacemaker
Septum
Ventricle
10.
(06.04 MC)
Which of the following describes how the circulatory and the digestive systems help to maintain homeostasis by working together? (5 points)
By delivering oxygen to cells
By having cells that fight infections
By delivering nutrients from food to cells
By carrying waste to the kidneys
Explanation:
Which of the following is a specialized cell that can recognize a hormone's chemical structure? (5 points)
Nerve cell
Smooth cell
Striped cell
Target cell
ans : nerve cell
6.
Why do we care about how the climate changed in the past? A.Scientists are curious about how fossils are made. B.We gain information about the movement of tectonic plates.
C. It gives us more information about how the climate is changing now and might change in the
future.
D. I keep asking myself the same question.
Answer:
C
Explanation:
It can help scientists predict how climate change will occur in the future and how can they stop it
14. Scientists use models of earthquakes to (5 points)
O change their location
O stop them from occurring
O understand the process
O increase the waves formed in the process
Answer:
under stand the process
Explanation:
i took the test
goodluck to people taking it
Bats and birds eating insects at different times of day is an example of (1 point)
O survival of the fittest.
O resource partitioning.
O competitive exclusion.
O natural selection.
Bats and birds eating insects at different times of day is an example of Resource Partitioning. So, the correct option is B.
What is Resource Partitioning?
Resource partitioning or niche differentiation is a process of natural selection that will force competitors to use resources differently in such a way as to avoid competition between species. Resource partitioning causes the co-existence of species.
If bats and birds eat insects at different times of the day, there is no survival of the fittest. Competitive exclusion states that no two species can co-exist in the same niche for a long time.
Therefore, bats and birds eating insects at different times of day is an example of Resource Partitioning.
To learn more about Resource Partitioning, refer to the link :
https://brainly.com/question/15686970
HELP ASAP PLZ PLZ
Would the crater size for an impact crater change if it was dropped from 6 meters (18 ft)? Why or why not?
Answer:
yes it would change
Explanation:
lots of factors can contribute like acceleration distance and resistance.
As a rule, the amount of energy that is transferred from one trophic level to the next higher level is about
Answer:
where is the question
Explanation:
the effects of toxic chemicals are minimized by which following three mechanisms
Answer:
Metabolic degradation, excretion, and repair.
Explanation:
All of the following are parts of the respiratory system except
pharynx
brionchioles
septum
trachea
Answer:
c) septum
Explanation:
Hope it helps :)
All of the following are parts of the respiratory system except septum.
What is respiratory system?
The network of organs and tissues that aids in breathing is known as the respiratory system.
It consists of your blood vessels, lungs, and airways. The respiratory system also includes the muscles that propel your lungs. Together, these components help the body circulate oxygen and eliminate waste gases like carbon dioxide.
Numerous components of the respiratory system work together to support breathing.
The organs and other body parts involved in breathing when you exchange oxygen and carbon dioxide are known as the respiratory system.
Therefore, All of the following are parts of the respiratory system except septum.
To learn more about respiratory system, refer to the link:
https://brainly.com/question/4190530
#SPJ6
Which is the best way of comparing two or more organisms
A. Homologous structures
B. DNA
C. Vestigial Structures
D. Fossils
Answer:
its b
Explanation:
Greenhouses are designed to capture the energy of the sun.
True
False
i believe the answer is true ^^
Answer: true?
Explanation:
In the daytime, sunlight shines into the greenhouse and warms the plants and air inside. At nighttime, it's colder outside, but the greenhouse stays pretty warm inside. That's because the glass walls of the greenhouse trap the Sun's heat. The greenhouse effect works much the same way on Earth.
_________is the most common type of orchid bears the name because of its supposed resemblance to moth in flight
Answer:
Moth Orchid
Explanation:
The Moth Orchid is the most common type of orchid and bears the name because of its supposed resemblance to a moth in flight. Native to Southeast Asia, the Philippines, and northern Australia, the Moth Orchid isn't exactly hard to find, and it comes in nearly every colour of the rainbow.
if smooth spherical ball of brass material having a radius of 3mm fall through certain
liquid having coefficient of viscosity of 8x 10'NS/m. If the density of the brass
material is 8.6 x10 kg/m', estimate its terminal velocity
+)? Assume that the density of the liquid is 5.7x10'kg/m.
Answer:
viscous liquid of density 2×103kg/m3, and η=0.1N-s/m2. The distance moved by the ball in t=0.1sec after it attains terminal velocity is. Updated On: 26-6-2020.
Missing: brass 3mm
Explanation:
Describe how you
lmprove a soil which has
tost its nutrients
Answer:
Reduce Inversion Tillage and Soil Traffic. Excessive tillage is harmful to soil health in a number of ways.Increase Organic Matter Inputs.Reduce Pesticide Use and Provide Habitat for Beneficial Organisms
Hope thishelps!!
Explanation:
Please select the word from the list that best fits the definition
The path followed by an object in space around another object in space
A-orbit
B-solstice
C-equinox
Answer:
what is it bro i need it too
Explanation:
Answer:
i think it's A.
Explanation:
i hope i'm not to late and that this helps-
HELPPP! I WILL GIVE YOU BRAINLIEST!!!
The diagram below shows a food chain.
Grass Rabbit Fox Bear
What would happen if human activity reduced the rabbit population?
A.
The bear population would increase.
B.
The grass population would decrease.
C.
The fox population would decrease.
D.
The fox population would increase.
Answer:
c, because the fox wouldnt have enough food
Explanation:
Answer:
C. The fox population would decrease.
Explanation:
It's a very direct cause and effect situation. Because the fox is a consumer of the rabbit, the fox would decrease after the rabbit population decrease, the bear would be indirectly affected.
How many bones are in the thoracic cage
which behavior is an example of how animals defend their teritory
Answer:
Many animals rely on smells to mark their territories, spraying urine, leaving droppings or rubbing scent glands around the territories' borders. Approaching animals will be warned off the territory without ever encountering the territory's defender.
Explanation:
MARK ME BRAINLIEST PLZZZZZZZZZZzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzadasdaw wa awd awdadasdadwd
Move this lichen
to where it belongs within the process of primary succession
Pls help 15 points
Answer:
1
Explanation:
Lichen are usually the first thing to grow on bare rock, making them a pioneer species. Fun fact, you can use lichen to determine if the air quality in an ecosystem is polluted.
Hope this helped :)
A group of students is learning to identify each organ of the human body by looking at images. The students identify the stomach. Which statement best describes the stomach?
The stomach stores food for energy.
B. The stomach breaks food into small pieces so we can breathe.
C. The stomach carries bits of food to different parts of the body.
D. The stomach breaks food into small particles.
Answer:
D
Explanation:
The acids in your stomach break down the food you eat
PLZ HURRY ITS A TIME LIMIT
Answer:
d) transport of rocks and mineral through wind