Answer:
Fraternal twins can be different genders because they are two completely different eggs getting fertilized; but even two same gender fraternal twins do not look completely alike. Whereas for identical twins since one egg is splitting into two, the two cells have the same exact DNA make up and chromosomes.
I also believe the technical part of it is to do with genetics, like ressesive and dominant genes, because they can be the same gender, ex. both girls and one has blue eyes, fair skin, and blonde hair, the other twin has brown eyes, black hair and tan skin. The parents could be part of the genes but there is also grandparents maybe the mom's mom has blonde hair and blue eyes, with fair skin. But the dad he has brown eyes, black hair and tan skin. The moms genes were recessive, but the grandma's genes were dominant.
I tried to explain it as best as I could I hope it helps!
NEED HELP WITH THESE 4 QUESTIONS WILL GIVE BRAINLIST!!!
1.What were some characteristics that the finches developed to give them an advantage in surviving?
2.How do you think that the one species of finch evolved into many different species, each with its own advantages?
3. In what ways do these advantages help the finches to survive and reproduce?
4. What might have happened if the finches didn't evolve into many different species?
Answer:
1. Because the drought reduced the number of seeds and finches with bigger beaks were able to eat the larger and harder seeds so more of them survived.
2. Summary: Changes in the size and form of the beak have enabled different species to utilize different food resources such as insects, seeds, nectar from cactus flowers as well as blood from iguanas, all driven by Darwinian selection
3. Medium ground finches with larger beaks could take advantage of alternate food
4. three species of Darwin's tree finches have been known to inhabit Floreana but no birds singing that song on Floreana have been heard in many years.
Explanation:
which of the following is an object used in relative dating
A-Carbon 14
B-Daughter Isotope
C-Index Fossil
D-Parent Isotope
i know for sure it’s not A
The object that is used in relative dating is Index Fossil. Thus, option C is correct.
What is Fossil records?
Fossil records are described as the position of found fossils all through the surface or the layers of the earth. The older the fossils are, the deeper it is found. Fossil records are also considered to be gathered information about the total number of the discovered fossils and the data obtained from them.
Fossil records are important guides to determine how life existed before. If you are to assemble a fossil, you will be able to see and tell the evolutionary changes that happened over the past years. Fossil records are evidences pointing out that life before is totally different from now.
Index fossils are fossils that are common yet were only present for a brief time. By comparing a rock layer to other rock layers, index fossils enable scientists to determine the relative age of a rock layer. Organisms that are still alive today yet have undergone little alteration over millions of years are known as living fossils.
Therefore, The object that is used in relative dating is Index Fossil. Thus, option C is correct.
Learn more about Index fossils on:
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The freezing point of a mixture of water and salt is
A. higher than that of pure water
B. the same as that of pure water
C. lower than that of pure water
D. none of the above
Answer:
lower
Explanation:
salt makes thing freeze faster
Answer:
A
Explanation:
Because when you mix a mixture and pure substances it’s higher
True or false: recycling can positively impact Earth's spheres.
Answer:
true
Explanation:
Answer:
True
Explanation:
Recycling provides big benefits to the planet's atmosphere by reducing overall materials consumption. ... The more we recycle, the more we reduce the impacts of global warming on the earth's climate. Animal Safety. Ocean-dwelling animals are threatened by the large amounts of plastic trash dumped into the seas every year.
which layer of the earth is made out of melted metal?
The outer core. A molten nickle- iron alloy.
all you need is in the photo
HELP PLEASE
At Love Canal in the 1970s, there was an environmental disaster. In response, the Superfund law was passed. Why can we view Love Canal and the creation of the Superfund as a positive environmental event?
A. It allowed the EPA to find toxic waste sites and force the responsible parties to clean up the sites.
B. It provided money to businesses responsible for toxic waste sites to clean up their pollution
C. It helped boost the economy among those waste sites
D. It helped identify toxic waste site and move people away from them
Answer:I’m stuck on the same question
Explanation:
The image below shows plant cells.
What feature of cells is best demonstrated in the image?
OA Cells are the basic units of structure and make up tissues.
OB. All organisms are made up of a large number of cells.
OC. All organisms have cells with different shapes and functions.
OD. Cells are formed from other cells within the same tissue.
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Michael loves playing his clarinet and believes it attracts more rabbits than any other instrument he
has played. In order to test his hypothesis, Michael played a song on his clarinet for a total of 5
minutes and counted the number of rabbits he saw in his front yard. He played the song a total of 3
times on his clarinet and repeated the experiment using a flute and a guitar. He also recorded the
number of rabbits he observed when he was not playing an instrument. The results are shown in the
chart.
Number of Rabbits
TRIAL
NO MUSIC
CLARINET
FLUTE
GUITAR
15
1
2
3
5
3
2
10
12
5
8
9
12
18
7
1) What is the independent variable?
2) What is the dependent variable?
3) What is the experimental group?
4) What is the control group?
5) What is one constant from the experiment above??
Answer:
Independent variable: type of instrument
Dependent variable: Number of rabbits attracted
Experimental group: The group when he played an instrument
Control group: The group when not playing an instrument
Constant: Same song
Explanation:
1. Independent variable is the variable that the experimenter changes or manipulates in an experiment. In this experiment, the variable that is changed is the TYPE OF INSTRUMENT used (clarinet, flute, guitar), hence, it is the independent variable.
2. Dependent variable is the variable that is measured in an experiment. It is the variable that responds to the changes made to the independent variable. In this experiment, the dependent variable is the "NUMBER OF RABBITS ATTRACTED" by the instrument played.
3. Experimental group is the group of an experiment that receives experiment treatment, which is the independent variable. In this case, the experimental group is the GROUP IN WHICH INSTRUMENT WAS PLAYED.
4. Control group is the group that does not receive the experimental treatment. In this case, the control group is the group in which INSTRUMENT WAS NOT PLAYED.
5. Constants are those variables that remains unchanged for all groups throughout the experiment. In this case, one constant is the SAME SONG played.
When a strong acid is added to a strong base a_________________ reaction occurs in the product will have a PH closer to_____
A. Neutralization,7
B. Ionic,0
C. Concentration,14
Answer:
A
Explanation:
Acids and bases when mixed neutralize eachother. and 7 is neutral on the PH scale
Which are the following statements are TRUE when concerning cells?
A: Prokaryotic cells can only produce eukaryotic cells
B:All cells come from pre-existing cells
C:Cells must always reproduce with other cells
D:Plant cells can only reproduce with animal cells
Answer:
I think it will option b hope it helps
Please help As fast as you can!
Can someone please helpppppo I’ll mark the brainliest
Answer:
C [the third one btw]
Explanation:
He believed that evolution gradually [slowly] happened over time.
Hope this helps :D Have a great day
Can someone help me with the question please.
Answer:
B Sun > Algae > Shrimp > Red drum
at which temperature would air hold the least water vapor?
Answer: I believe it's 60 degrees Fahrenheit or less, Since heat is required to have proper evaporation, then this will only be leading to a portion of the water condensed leading to a half condensation
Explanation:
Answer:
the coldest temp in F holds the least amount of water vapor..
Which best describes the importance of meiosis to living organisms? *
O genetic variation and growth
O growth and development
O development and sexual reproduction
O sexual reproduction and genetic variation
What happens when two
protons get close together?
A. They are attracted to each other.
B. They repel each other.
C. Nothing happens.
Answer:
they repel each other
Explanation:
in basic chemistry:
protons repel other protons
protons are attracted to electrons
electrons repel electrons
Answer:
B. they repel
Explanation:
I'm learning the same thing lol
what is the atmosphere for gas essential for animal life?
Answer: oxygen
Explanation:
The workers who paid a rate for every day they work are known as
Answer:
piece work
Explanation:
I hope this is right
Pls I need answers at least one answer of any of the questions
Certain gene mutations can cause genetic disorders. However the same gene can also have a positive effect. The genetic mutation that led to sickle cell anemia can also give its carriers protection from which of the following diseases?
A.
strep throat
B.
Type I diabetes
C.
malaria
D.
hemophilia
Answer:
its malaria
Explanation:
I got it wrong and it showed me that it was malaria
please answer asap! anatomy final exam!! thanks:)
Describe what lymph is and how it travels throughout the body. What would happen if the lymphatic system did not drain interstitial fluid from the body?
Answer:
A fluid that flows through the lymphatic system is called lymph. it travels when you breathe and move your muscles the lymph continuously get pushed towards the heart from the outer reaches of your body. if the lymphatic system didn't drain interstitial fluid then the lymph fluid would build up in the body's tissues, making them swell.
In what ways is the composition of the sun different from the Earth? Choose all that apply.
The Sun does not have continents.
O The Sun has a thick, solid core.
O The Sun does not have a solid surface
The Sun does not have a solid core.
The Sun has continents known as plasma zones.
Answer:
1,3,4
that's my answerrrr
What is the phase change from gas to liquid?
A. Sublimation
B. Condensation
C. Vaporization
D. Transpiration
Answer:
Condensation
Explanation:
Condensation is the phase change from gas to liquid. For example, water vapor condenses when you are taking a shower because wet spots show up on a mirror after taking a shower.
Answer:
Condensation
Explanation:
Sublimation is when a solid turns into a gas. Condensation is when water in the air collects to form droplets that gather on a surface/object. Vaporization is when a liquid forms into a gas. Transpiration is a thing in plants where water transfers throughout the plant.
The dodo bird is now extinct. What factor would not have led to its extinction?
Answer:it was well adapted to living on the island of Mauritius
Explanation:
Which is located at the beginning of a gene?
terminator
promoter
mRNA
intron
What is the term for traits an organism possesses that help it survive better?
a.
Permutations
b.
Mutations
c.
Generations
d.
Adaptations
Answer:
d. adaptations
Explanation:
Two offspring from same parents can have different phenotypes. How is this possible?
Answer:
Genes come in different varieties, called alleles. Somatic cells contain two alleles for every gene, with one allele provided by each parent of an organism. However, an allele that is hidden, or not expressed by an organism, can still be passed on to that organism's offspring and expressed in a later generation.
Explanation:
Overdominance, in instance, happens when a heterozygote exhibits a more extreme phenotype than either of its parents.
What is heterozygote?Heterozygote is defined as a person, animal, or other thing possessing a pair of different alleles of a specific gene, one of which is dominant and the other recessive. One normal allele and one mutated allele, or two distinct mutated alleles, can make up a heterozygous genotype.
The explanation is connected to the fact that each parent has two different gene pools. Furthermore, only 50 percent of each parent's DNA is transferred to their offspring. and that the portion that is passed down is random. Every child has a unique set of genes thanks to the interaction of all these influences.
Thus, overdominance, in instance, happens when a heterozygote exhibits a more extreme phenotype than either of its parents.
To learn more about heterozygote, refer to the link below:
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What is the function of a phospholipid bilayer
Answer:
Phospholipid bilayers create a selectively permeable barrier to the movement of ions and molecules important for cellular function.
Answer: The phospholipid bilayer acts as a barrier to the passage of molecules.
Match each underlined word to its correct meaning based on the context of the sentence. Tom had long been picking his way cautiously through this treacherous forest; stepping from tuft to tuft of rushes and roots, which afforded precarious footholds among deep sloughs. It was a dreary memento of the fierce struggle that had taken place in this last foothold of the Indian warriors. He was sulky, however, and would not come to terms: she was to go again with a propitiatory offering, but what it was she forbore to say. At this propitious time of public distress did Tom Walker set up as a usurer in Boston.
Answer:
A. Tom had long been picking his way cautiously through this treacherous forest; stepping from tuft to tuft of rushes and roots, which afforded precarious footholds among deep sloughs. - 3.dangerous.
B. It was a dreary memento of the fierce struggle that had taken place in this last foothold of the Indian warriors. - 4.bleak.
C. He was sulky, however, and would not come to terms: she was to go again with a propitiatory offering, but what it was she forbore to say. - 2.conciliatory.
D. At this propitious time of public distress did Tom Walker set up as a usurer in Boston. - 1.favorable .
Explanation:
The given underlined words in each sentence are-
1. "Precarious" refers to something unstable, unconfirmed, dangerous, uncertain, unreliable. So, when used in the given sentence, it suggests the dangerousness of the foothold that Tom had to depend on.
2. The word "dreary" is also used for something dull, uninteresting, bleak. It is used to describe the banal, cheerless memento of the fight the Indian warriors had given.
3. "Propitiatory" is another word used to describe something that is like a conciliatory offering, a token of appeasement, or trying to please someone or something. In the given sentence, it is used to describe how she will be offering a conciliatory act to him.
4. The word "propitious" is synonymous with something favorable, advantageous, presenting a promising idea. And in its use, the sentence presents how the public distress is favorable for Tom Walker to set up his office.
Answer:
- 3.dangerous. Tom had long been picking his way cautiously through this treacherous forest; stepping from tuft to tuft of rushes and roots, which afforded precarious footholds among deep sloughs.
- 4.bleak. It was a dreary memento of the fierce struggle that had taken place in this last foothold of the Indian warriors.
- 2.conciliatory.
He was sulky, however, and would not come to terms: she was to go again with a propitiatory offering, but what it was she forbore to say.
- 1.favorable . At this propitious time of public distress did Tom Walker set up as a usurer in Boston.
Explanation: