Answer:
The early atmosphere was mainly carbon dioxide and water vapour. Water vapour condensed to form the oceans. Photosynthesis caused the amount of carbon dioxide to decrease and oxygen to increase.
Hope it helps!!!
What is science to you? like whats your own definition of science
Answer:
The study of anything basically. It is learing new things by observation, experiments, facts, principle, and hypothesis.
Answer:
it's the studying of scientific knowledge
Which of the following would not be considered evidence that supports the modern theory of evolution?
a. The embryonic structures of many organisms appear similar and they share characteristics like gills and tails during early development.
b. Fossils are discovered that show gradual changes in the physical characteristics of a species over time.
c. Analogous structures, like bird and bat wings, show us that these organisms inherited wings from a recent common ancestor.
d. DNA of organisms that are theorized to be closely related often shares a lot of similarities.
Answer:
a
Explanation:
Some relationships between organisms are described below. What type of relationship does each statement describe?
Answer:
Competition, predation, commensalism, mutualism and parasitism.
Explanation:
There are five types of relationships present between organisms such as competition, predation, commensalism, mutualism and parasitism. Competition is a type of interaction between organisms in which both the organisms are harmed. In predation relationship, one organism feed on the other by killing it. commensalism is a relationship in which one is benefited and the other is neither benefited nor harmed. In mutualism relationship, both the organisms or species gets benefit from one another whereas parasitism is a type of relationship in which one organism is benefited and the other is harmed not killed.
Which is the proper order of structures that contact the substances removed from the blood?
nephron → urethra → bladder → ureter
urethra → ureter → bladder → nephron
nephron → ureter → bladder → urethra
urethra → bladder → ureter → nephron
Answer:
Option 3
Nephron -> Ureter -> Urinary Bladder -> Urethra
Answer:
c
Explanation:
Helicase is an enzyme responsible for unwinding the double helix of the DNA by breaking apart the hydrogen bonds between each of the base pairs. Which phase of the cell cycle is helicase most likely active?
A) S
B) М
C) G1
D) G
Helicase is an enzyme responsible for unwinding the double helix of the DNA by breaking apart the hydrogen bonds between each of the base pairs. Helicase is more active in the S phase of the cycle. Option A is the correct answer.
What are the events of the cell cycle?
The cell cycle consists of the interphase and the cell division phase, where the cell division takes a little time in comparison to the interphase. The parent cell spends the majority of its time in the cell cycle's interphase and less time in the cell division phase.
There are three phases in the cell cycle's interphase: G1, S, and G2. The cell grows in both the G1 and G2 phases, while the DNA replicates in the S phase.
Hence, helicase is an enzyme that is responsible for unraveling the double helix of DNA by breaking apart the hydrogen bonds between each base pair. Helicase is more active in the S phase of the cell cycle. Option A is the correct answer.
Learn more about the cell cycle here.
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The placenta and umbilical cord act as a life support system. What role do they play in the healthy development of the fetus?
Answer:
It attaches to the wall of the mother's uterus, and the umbilical cord extends from it, connecting to the baby. It is the baby's life support system and breathing organ while in the womb. The placenta allows oxygen and nutrients to move from the mothers blood to the fetus' blood.
Please help me asap! Thank you so much!
What is the most harmful form of air pollution: CFCs, carbon dioxide or sulfur/nitrogen containing gas? Defend your answer. (Please explain why you think that is the most harmful form of air pollution)
Sulfur Dioxide (SO2).
Sulfur dioxide (SO2) is a colorless gas or liquid with a strong, pungent odor.
I need help on biotics and factors
Answer:
Biotic creatures are living things, like animals, plants, and cells
abiotoc are the enviroment they live in like, forests, desserts and bodies of water
Explanation:
did this help?
What are two ways scientists use evidence of past environments preserved in rock?
I think it is A and D (at least those are the ones that made the most sence to me).
Describe what happens to the egg in the ovary as the FSH level increases.
Answer:
The rise in follicle-stimulating hormone stimulates the growth of the follicle in the ovary. With this growth, the cells of the follicles produce increasing amounts of oestradiol and inhibin.
Hope this helps, good luck!
Plant Cell Writing Prompt
Part 2: Using your notes, write a detailed explanation of a plant cell, one of the most complex cells. Please be sure to write at least two paragraphs and highlight all parts used in your writing. Make sure your essay includes all the following parts:
cell membrane, genetic material (DNA), cytoplasm, ribosomes, cell wall, nucleus, rough endoplasmic reticulum, smooth endoplasmic reticulum, Golgi apparatus, a large vacuole, mitochondria, chloroplasts, lysosome.
Answer:
Plant cell
Explanation:
Cell wall: cell wall is only found in plant cell . it is made up of cellulose. it's function is to give shape to the cell and protect the delicate inner parts of the cell. this cell is fully permeable. it means it will allow all substance to pass in. cell membrane is made up of protein and lipids. it's function is to control what comes in and out of the cell. this membrane is selectively permeable. it means it allows some substance to pass in and others don't. cytoplasm is large sac like structure. most chemical process occur here. chromoplast are the green pigments.
cell wall is only found in plant cell . it is absent In animal cell . the neucleus in the plant cell contain a pigments haemoglobin, which contain genetic information to the cell .
What two body systems affect type 1 diabetes?
Why would the location of resources be a concern?
A) Some areas have more access to resources than others.
B) Human populations are sometimes concentrated in areas that are lacking resources.
C) Areas with fewer resources may need to buy resources from other areas.
D) All of the above
Answer:
D is the correct option
Explanation:
why???
let's see option by option
A)if an area is having a resource then the people around it or near it will access it more which can lead to end of the resource.so there should be rule to use equal resource by everyone
B) sometimes when there is a drought or phenomena in living area so people living there might face issues with the resources they had and now they are gone.so right thing is to move from that place to ankther place where there is resources
C)in areas that are near to desert or hilly areas might not have enough resources near them. so that may cause people to spent money to bring that resources near them or energy waste will be there.so in that cases they should either renovate that place for living or not to live there.
hope it helps you
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Gg x Gg
g
10.
G
GG
Gg
g
Gg
gg
The Punnett square above shows a cross between two plants. Both plants were heterozygous for dark green leaves (G)
and carry the recessive trait for light green leaves (g). In this cross, 50% of the offspring will be
Answer: Gg
Explanation:
Water that infiltrates into the ground is called ___________.
A. runoff
B. groundwater
C. precipitation
Answer: B Infiltration
Explanation: The process by which water penetrates the ground to become groundwater is called b. infiltration. Runoff is water that flows on the earth's surface after a shower of rain. This water usually flows into rivers or streams. Precipitation can occur as rainfall, snow, hail or sleet and falls from clouds when condensation occurs. Transportation is the process by which trees release water vapor into the atmosphere via stomata in the leaves.
Answer:
B-Groundwater
Explanation:
Think about it lol "Water that infiltrates into the ground" which word has ground and water in it
Correct you got it right it is "groundwater"
You are officially big brain
does anyone what this structure is called? and also if you can identify it please
Answer: C: Uterus D: Vagina Egg cells are produced in the ovaries
This process is called Ovulation
Explanation:
That is why we have periods
Use signal words from the passage to determine
which of the following events was caused by the
fact that the plants on the island were different
from the plants on the South American mainland.
A. Finches from South America arrived on one
of the islands.
O B. The population on the island evolved
differently from the population on the
mainland.
C. The finches that arrived on the island had
to survive in a new environment.
O D. A few finches from the island may have
flown to another island and begun the
speciation process again.
forest plant nurseries will likely work with state and federal agencies
Answer:
true
Explanation:
Answer:
If this is a true or false question it would be true.
Explanation:
Forest plant nurcries have an important job of helping and protecting forests and they are used by federal agencies to learn more about how to protest these plants.
Women gives birth to a baby boy. A few years later she gives birth to another baby boy. What is the probability that her third child will be a girl? Play your reasoning
Answer:
50 %
Explanation:
It is given that a woman gives birth to a baby boy. Her second child is also a baby boy. Now she is about to give birth to her third child. We have to determine the probability of the child to be a girl.
Here, the probability of the child to be a girl would be 50 % or 1 out of 2.
There are two possibilities and the possibilities would result a boy child or a girl child. So there are two possible outcomes and is equally likely with each child birth.
Also each child birth is an independent event, so the probability that the one results will occur do not depend on the previous births.
There are three species of birds on an island. Bird A has a heavy bill for eating seeds.
Bird B has a pointed bill for eating insects. Bird C has a sharp bill for eating both insects
and seeds. If all insects on the island suddenly disappeared, which bird or birds would
be the LEAST affected?
Please help
Answer:
A and C would least be affected
Explanation:
because a doesn't live off of insects and see if insects do disappear it still has seed stuff all back on
Bird A will be least affected if all insects on the island suddenly disappeared because Bird A does not depend on the insects.
What is the survival of the fittest?This theory suggests that the fittest organisms survive in the environment and reproduce.
The fittest organisms have most of the required traits to survive. Bird A eats the seeds, Bird -B eats the insects, and bird C eats both seeds and insects,
Therefore, Bird A will be least affected if all insects on the island suddenly disappeared because Bird A does not depend on the insects.
Learn more about survival of the fittest:
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true or false
Only animals have a niche.
Answer:
False
Explanation:
Answer:
True
Explanation:
The staff in the neonatal unit at a hospital are not sure which of two babies belong to which set of parents. The blood types of the babies are AB and O. One set of parents has blood types A and B. With this knowledge it would still be necessary to test the second couple.
True
False
Answer:
True
Explanation:
Briefly describe what uses the oceans can pose to humanity. Write your response in the essay box below.
Answer:
Water, fresher climate, not only scientific factors but also a psychological factor (nice beaches, palms, other wildlife, etc.)
how do mutations lead to a variation of traits with a population if organisms?
The flow of individuals in and out of a population introduces new alleles and increases genetic variation within that population. Mutations are changes to an organism's DNA that create diversity within a population by introducing new alleles.
Which statement accurately describes the levels of organization?
A. A group of cells that work together to perform a common function is called an organ,
B. A group of tissues that work together to perform a common function is called an organ,
C. A group of tissues that work together to perform a common function is called a cell,
Activity
Dana
Tyne here
Answer:B. A group of tissues that work together to perform a common function is called an organ,
Explanation:
Why is the interdependence of the worms and plants an example of commensalism?
Answer: In commensalism, one organism benefits, and the other neither benefits nor is harmed. In this case, plants benefited, and worms seemed neither to benefit nor be harmed.
Explanation -
What is the purpose of rRNA?
A. to retrieve amino acids
B. to be a working copy of DNA
C. to assemble proteins
D. to replicate the genetic code in mitosis
Answer:
A
Explanation:
The primary function of rRNA is in protein synthesis – in binding to messenger RNA and transfer RNA to ensure that the codon sequence of the mRNA is translated accurately into amino acid sequence in proteins.
At the core of the differences between gender and sex is the chromosomal information transmitted at the moment a child is conceived. An "XY" chromosome generally means A) a heterosexual embryo B) a male embryo C) a hermaphrodite embryo OD) a female embryo
Answer:
B) male embryo
Explanation:
Where does the process of translation occurs ??
Answer:
ribosome
Translation occurs in a structure called the ribosome, which is a factory for the synthesis of proteins. The ribosome has a small and a large subunit and is a complex molecule composed of several ribosomal RNA molecules and a number of proteins.
Explanation:
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