The rocks found at the bottom of a river smooth and flat because those are collides with each other.
Explanation:
At the bottom of the river, the rocks which are found are very smooth and the shape of these rocks are flat because the rocks at the bottom collide with each other.
This results in the chipping off parts of the rocks and this results in the surface of the rock to become smooth and becoming flat. Moreover the sand found at the bottom acts as a sand paper creating resistance and smooth-ens the rocks at the bottom of the river.
Abrasion, which is the physical wearing away of a material by friction, is the process that results in the formation of smooth and flat rocks often found at the bottom of rivers.
What is Abrasion?Abrasion is the process of rubbing or scraping away a material, by rubbing against a rough surface or causing friction. This type of mechanical weathering can be brought about by a variety of things, including wind, water, snow, and human action. Rock, metal, plastic and wood are some of the materials that may be subject to abrasion.
This may result in material loss and modification of the appearance and texture of the surface. Natural features such as the smoothness of river boulders or the roundness of pebbles on a beach can also be the result of friction. Sandblasting, grinding and polishing are some examples of industrial abrasive applications.
Therefore, Abrasion, which is the physical wearing away of a material by friction, is the process that results in the formation of smooth and flat rocks often found at the bottom of rivers.
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. During reproduction, a sperm cell fertilizes an egg cell. The newly formed
embryo then undergoes mitosis as it develops. The cells of the organism
differentiate in order to perform different functions for the organism.
The reason different cells perform different functions is that they -
The diagram shows the reproductive system of a plant.
Which of the following best describes the interaction that occurs between a plant's reproductive parts during self-fertilization?
The diagram shows the reproductive system of a plant.
Which of the following best describes the interaction that occurs between a plant's reproductive parts during self-fertilization?
Pollen is released from the stigma and is transferred to the anther. A pollen tube grows down from the anther through the filament and fuses with the ovule, where the sperm fertilizes the egg.
Pollen moves from the ovule up through the style and is released from the stigma. The pollen is transferred to the anther, where the sperm fertilizes the egg.
Pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches an ovule within the ovary where the sperm fertilizes the egg.
The correct answer is pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches an ovule within the ovary where the sperm fertilizes the egg.
This option correctly defines the interaction that occurs between a plant's reproductive parts during self-fertilization as it explains the pollination process and fertilization, when pollen grains are released then are transferred to the stigma the pollen tube is there that reaches ovule and the sperms fertilize an egg.
What is pollination?
Transfer of pollen from anther to the stigma of plants. Pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches an ovule within the ovary where the sperm fertilizes the egg.
Thus it is clear that the answer explained above is correct describes the interaction that occurs between a plant's reproductive parts during self-fertilization.
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D D 4) After making an observation, what does a scientist ask?
What if I don't clean my room?
Are all doctors scientists?
A problem question.
What did someone else say about the same topic?
Who might disagree with me?
please help meeèe I really need urs help
Explanation:
Science and technology help each other advance. Scientific knowledge is used to create new technologies. New technologies often allow scientists to explore nature in different ways and make new discoveries. Examples of technologies that have helped science advance include the telescope and microscope.
what do the letters stand for please help me thank you
Answer:
D
Explanation:
Prophase
Metaphase
Anaphase
Telophase
These are stages in mitosis.
Why do people gain weight ?
Answer:
Poor sleep, sedentary activities, and eating too many processed or sugary foods are just some of the habits that may increase your risk of weight gain. Yet, a few simple steps — such as mindful eating, exercise, and focusing on whole foods — can help you reach your weight loss goals and improve your overall health.
Explanation:
If an invasive species emigrated from a continent to a small island near the continent, what would most likely occur on the island
Answer:
Organisms on the island would migrate to a larger island.
Invasive species can cause extinctions, reduce biodiversity, compete for resources, and modify environments.
What is an invasive species?An invasive species is a category of non-native species that has overtaken the habitat to which it was initially introduced.
Native plants and animals may go extinct as a result of invasive species, which can also decrease biodiversity, compete with native species for scarce resources, and disrupt habitats.
Preventative measures are the most practical and secure method of managing invasive species. It is far more effective to deal with invasive species early on and quickly than to try and contain an extensive infestation. The invasive species may be the target of control and management measures if eradication is not achievable.
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In the series of words given below, which of the following words is not categorized with the others?
superstructure - supervene - superstar - Supemova - supertanker
Select the single best answer:
e
A. superstructure
B. supervene
C. superstar
D. supernova
E supertanker
Answer:
I think its supernova
Explanation:
the choices a b c and e are all something more of something that exists. Ex) Super star is a star that is Super! But a Supernova is just a Supernova. There is no nova that is Super.
I hope this helps.
Supernova is the series of words given below, which of the following words is not categorized with the others.
What is Supernova?A star that has reached the end of its life and bursts in a bright flash of light is what is known as a supernova.
Supernovae have the ability to briefly outshine entire galaxies and emit more energy in a single second than the sun does in its entire lifetime. Additionally, they are the universe's main supplier of heavy materials. Supernovae are "the greatest explosion that occurs in space," according to NASA.
Supernovae were noted by numerous cultures before the telescope was created in the 17th century. According to NASA's records, this "guest star" was visible in the sky for eight months.
Therefore, Supernova is the series of words given below, which of the following words is not categorized with the others.
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organisms can be made up of many________
Answer:
individual organisms can be organized into the following levels: cells, tissues, organs, and organs systems.
Hi !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
Answer:
Hiya how ya doing?? :D
Explanation:
have a miraculous day everyone!!! <3
Why do organisms perform fermentation?
Answer: Because muscle cells cannot get oxygen fast enough to meet their energy needs through aerobic respiration.
Answer: Because muscle cells cannot get oxygen fast enough.
HELP!!!!!
If one strand of DNA has the nitrogenous bases: AGT CTC TAG AGC TAT CGT GCG, what is the order of nitrogenous bases on the complementary DNA strand?
Answer:
Hey there you got this! remember that A -T and C-G for the complement strand. Don't forget the 5' to 3'.
Usualy teachers if they don't specificy then the one you are given is 5' to 3' which means the mone you make lokking left to right is 3' to 5'. Make sure to choose the correct answer choice that looks like this.
If you gently bend your ear, and then let go, the shape of your ear will return because the cartilage of your ear contains_____.
Answer:
If you gently bend your ear, and then let go, the shape of your ear will return because the cartilage of your ear contains elastic fibers.
Is grass a living thing
why yes it is
my proof : Plants are living because they grow, take in nutrients and reproduce. Trees, bushes, a cactus, flowers and grass are examples of plants. Plants are also living things. Plants are living because they grow, take in nutrients and reproduce.
Arable land is land is no longer able to promote growth of agricultural changes.
True
False
The answer is false
Answer:
False
Explanation:
I took the test
3. How do animals survive in water and land habitat?
PLEASE HELP ME!!!!!!!
Explanation:
A salamander adapted to its surroundings both on land & water. these creatures evolved to do both by living in in low- moisture & raining conditions.
please help me i never done this before and it’s confusing me i’ll give 100 points + brainlist
Answer:
A,E,D,B,C
Explanation:
first pic is A
second pic is E and go on ...
9. WHY IS THIS (ANSWER TO #8. FROM ABOVE) MOLECULE SO IMPORTANT?
Answer: Adapter Molecule of RNA
Explanation:
It's a link for mRNA and amino acids.
_______________ are sounds the auditory apparatus makes.
vibrations
otoacoustic emissions
cochlear action potentials
none of the above
I don’t understand why mom doesn’t want me
Answer:
is because she wants you man. there no mom that dose not like their child
1. Distinguish living beings from non-living things on the basis of the following
A. reproduction
B.energy production
C. growth
Answer:
reproduction. plants undergo mitotic division while animals meiotic division
energy reproduction. plants produce or manufacture their own food through photosynthesis while animals depend on plants that's they convert the energy from plants (carbohydrates) into proteins vitamins etc
growth. growth in plants in localized..it involves growth of part tissues like roots stem leaves while in animals it is diffuse that's it occurs in every active cells.
Explanation:
I HOPE THIS IS HELPING.
Select the letter of the most appropriate answer.
examples include base substitutions and deletions
person who has one recessive allele for a recessive genetic disorder
type of DNA used to prepare a DNA profile
continuing process by which all organisms on earth now share the same genetic code
genes contain the coded instructions to manufacture __________
custom genes that can be inserted into other DNA strands
genes on this chromosome were used to determine the ancestry of Sally Hemings' descendants
combined DNA from multiple sources
genetic analysis used to trace the ancestry of all humans from Africa
method of cleaning up environmental; pollution with GM organisms
new genetic editing technology that uses small pieces of RNA to find specific locations in the DNA strand
A. Amino Acids
B. Bioremediation
C. Carrier
D. CRISPR
E. Evolution
F. GM Organism(s)
G. Mitochondrial DNA
H. Point Mutation(s)
I. Protein(s)
J. Recombinant DNA
K. Non-Coding DNA
L. Transgene
M. X Chromosome
N. Y Chromosome
The brightness of a star depends on the amount of light energy coming from the star.
Which factor also affects the brightness of a star in the sky?
the amount light shining on the star
the distance of the star from Earth
the season of the year on Earth
the number of other separate stars seen around it
Answer:
Three factors control the brightness of a star as seen from Earth: how big it is, how hot it is, and how far away it is. Magnitude is the measure of a star's brightness. Apparent magnitude is how bright a star appears when viewed from Earth.
Explanation:
Answer:
the amount light shining on the star
Explanation:
What is the location of a volcano that forms in the middle of the ocean called?
A) seismic wave
B) hotspot
C) fault line
D) earthquake
Answer: Answer is B a hot spot
Explanation:
How have golden eagles adapted their behavior for living in temperate grasslands?
Golden eagles have adapted their behavior for living in temperate
grasslands by building their nests on the ground.
Temperate grassland is characterized by mainly grasses and very few
trees. Animals like the Golden eagle who build their nests on tall trees are
able to adapt to the absence of these types of trees in the grasslands by
building their nests in the ground.
They live in in pairs in the temperate grasslands to efficiently guard the
nest and hunt animals for their survival.
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The ___ is a short loop from the heart to the lungs and back again. HELP
Answer:
pulmonary circulation
Explanation:
it's a short loop from the heart to the lungs back again
4. Don't
fishing when it's windy.
b) play
c) go
a) do
d) eat
Answer:
Go
Explanation:
Dont go fishing when its windy
Which of the following best expresses the concept of natural selection
Answer:
style neutrons
Explanation:
PLEASE HELP!! 70 POINTS!!!
Explain how DNA is involved in creating genetic variation within a species. Is this considered a mutation, if so why?
Answer:
different strands creates different human characteristic
Which is the advantage of water's heat capacity?
Answer:
helps regulate the rate at which air changes temperature