Answer:
feathers are dead tissues. They are only alive while developing as they have a blood supply. Feathers are produced by living cells located in small pit-like follicles in a bird's epidermis, its outer skin layer. The feather is enlarged by the keratin that is protruding straight out from the skin follicle. In order for something to be classified as anything that was never alive
Explanation:
When compared to prokaryotic cells, eukaryotic cells
4
A. are simple, smaller, and have DNA floating freely throughout the cell.
B. are complicated, larger, and have DNA captured in a membrane-bound structure.
C. are round and hard, unlike rectangular and soft prokaryotic cells.
D.
are able to move from place to place, unlike stationary prokaryotic cells.
Answer:
B. are complicated, larger, and have DNA captured in a membrane-bound structure.
Explanation:
DNA is found in the nucleus of the cell that is membrane bound structure.
What element has 1 valence electrons and 4 energy levels?
Answer:
Hydrogen and helium, both in the first period, have their valence electrons in the principal energy level n=1
Explanation:
Answer:
Hydrogen and Helium
Explanation:
r If a mouse population changes color from white to black over many generations, which question should be asked to determine whether the population changes are a result of natural selection or artificial selection?
A.
What do humans need to keep mice healthy as pets?
B.
Was there a change in the genetic traits of the mice?
C.
Were the genes of the mice inherited from their parents?
D.
Was there a change in the environment where the mice live?
Answer:
D if there is a change in environment that would favor black fur you could assume that natural selection caused the fur to change
Explanation:
The question which should be asked to determine whether the population changes are a result of natural selection or artificial selection is that was there a change in the environment where the mice live? Thus, the correct option is D.
Natural selection is the process through which the populations of different living organisms adapt and change with respect to their surrounding environment. Individuals in a population are naturally variable, it means that they are all different in some way or the other. This variation in the population means that some individuals have traits which are better suited to the surrounding environment than others.
If a mouse population changes its color from white to black over many generations, then the question which should be asked is "Was there a change in the environment where the mice live?"
Therefore, the correct option is D.
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what was known before franklin and wilkins conducted their studies of DNA?
Answer:
A. DNA is found in the nucleus of a cell
C. Organisms store and transmit genetic information
E. Cells contain protein molecules.
Answer:
A. DNA is found in the nucleus of a cell C. Organisms store and transmit genetic information E. Cells contain protein molecules.
Explanation:
Why are we most concerned about CO2 as opposed to other greenhouse gases?
Because CO2 puts us at the greatest risk of irreversible changes if it continues to accumulate unabated in the atmosphere
A female heterozygous for dark hair and freckles married a male also heterozygous for dark hair and freckles. What is the possibility of having offspring with no freckles and light hair?
•8/16
•3/16
•9/16
•1/16
Answer: I would say 3/16 but then again im not too sure you may want to wait until a second answer arrives :D
please help. me there is 8 questions plz
Answer:
1. c , 2.b, 3.a, 4.a, 5.c, 6.a, 7.c
Which product of fermentation expands bread dough
Ethanol
Energy
Carbon dioxide
Carbon dioxide because During fermentation, carbon dioxide is produced and trapped as tiny pockets of air within the dough. This causes it to rise. During baking the carbon dioxide expands and causes the bread to rise further. The alcohol produced during fermentation evaporates during the bread baking process.
Rico and Bree are camping and have potatoes wrapped in foil to eat. Bree put her potato in the campfire for a while, but Rico did not. Now Bree's potato has a high temperature. What is the difference between the molecules of the two potatoes? *
There is no difference because both potatoes are made of the same type of molecules.
What is Molecules?Molecule is a group of two or more atoms that are bound together with the help of some attractive forces. These attractive forces are known as chemical bonds. It is the smallest particle of a substance that has all the physical and chemical properties of that substance.
Atoms have a single nucleus with a positive charge protons surrounded by a cloud of negatively charged electrons. When these come close to each other, the electrons interact with each other and with the nucleus, lowering the total energy of the system, then the atoms bond together to form a molecule.
There are three types of molecules:
1. Molecule of an atom
2. Molecule of an element
3. Molecule of a compound
Thus, there is no difference because both potatoes are made of the same type of molecules.
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When humans come to a previously pristine environment, they inadvertently bring organisms with them that can be harmful to the local flora and fauna. Such organisms are known as _____.
Answer:
INVASIVE species
Explanation:
In biology, an organism is said to be INVASIVE if the organism is foreign to a particular region or habitat and possess the unpleasant ability to proliferate or grow rapidly to the point of competing with local species of organisms.
According to this question, humans are said to introduce organisms that have the ability to harm the local flora and fauna. Hence, these organisms are INVASIVE SPECIES because they are foreign to that place and cause damage in their new environment.
the chromatin condenses
into visible chromosomes
Answer: DNA and proteins contained in the nucleus, known as chromatin, condenses. ... The chromatin coils and becomes increasingly compact, resulting in the formation of visible chromosomes. Chromosomes are made of a single piece of DNA that is highly organized.During prophase, chromatin condenses into chromosomes, and the nuclear envelope, or membrane, breaks down. In animal cells, the centrioles near the nucleus begin to separate and move to opposite poles (sides) of the cell. ... The spindle starts to form during prophase of mitosis
Explanation:
What is the meaning of science?
a force has direction and contact true or false
Answer:
Because a force is a vector that has a direction, it is common to represent forces using diagrams in which a force is represented by an arrow. In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate. ... A force has both magnitude and direction, making it a vector quantity.
Therefore, yes
The MA of a lever is 4. If you have to lift the object up 20 cm,
how far will you have to pull down?
Answer:
jayfeather friend me
Explanation:
Answer: The mechanical advantage of a machine is 4. ... Mechanical advantage MA is the ratio of output (generated by the machine) force to input (applied to the machine) force. So MA = 4 means that for example if you apply 100 N then your machine will multiply that force and generate 400 N.
What would be the result if crossing over did not happen during meiosis in humans?
Answer:
A lack of genetic variation in offspring
9. What genetic syndrome is shown in this picture?*
Describe the treatment goals for dialysis.
Answer:
The main goals are to keep your body in balance and keeping a safe level of certain chemicals in your blood.
Explanation:
Keeping your body in balance by removing waste, extra water, and salt to prevent those things from building up in your body. The certain chemicals are: potassium, sodium, and bicarbonate.
In dialysis, the main goals are to keep your body in balance and keeping a safe level of certain chemicals in your blood.
What do you mean by dialysis?Dialysis is a procedure to remove waste products and excess fluid from the blood when the kidneys stop working properly. It often involves diverting blood to a machine to be cleaned.
Average life expectancy on dialysis is 5-10 years, however, many patients have lived well on dialysis for 20 or even 30 years. Talk to your healthcare team about how to take care of yourself and stay healthy on dialysis.
High blood pressure and diabetes are the two most common causes of kidney failure. They can also become damaged from physical injury, diseases, or other disorders.
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What can consumers do to make sure that more materials are recycled?
А buy products made from recycled materials
00
buy biodegradable plastics
С
use canvas bags when shopping
D
use paper bags instead of plastic bags
Answer:I feel like some of the answers for me would be A and B but if you only had to choose one I would choose A
Explanation: When you buy recycled you are helping the local economy and the environment. You already know that recycling keeps useful materials from going to waste in landfills or incinerators. But did you know that buying recycled-content products ensures that markets for those recovered materials are strong
Edit: Just figured out it's not B here's why:
Plastics marketed as "biodegradable" will contribute to plastic pollution if they are lost or littered. They do not break down as quickly and completely in the environment as the term might imply and thus can harm wildlife and ecosystems. Sorry if it's long
At the time when the consumers do to make sure that more materials are recycled so here option A is considered i.e. buy products made from recycled materials.
Recycled materials:At the time when we purchase the recycled so you helped the economy as well as the environment. Also, recycling plays a vital role for minimizing the wastage and make the proper utilization of the product.
Hence, At the time when the consumers do to make sure that more materials are recycled so here option A is considered i.e. buy products made from recycled materials.
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Which ecosystem is the least stable?
A.savanna
B.coral reef
C.rain forest
D.cornfield
Answer:
D
Well in a cornfield, its only corn and if your a hebirvore, its heaven there, but for canviroe's it doesnt work out to well, also corn field's are normally in a farmer's land, so meat eating animals dont really liketo go there, or they migth get shot
Hope this helps!
Answer:
D
Explanation:
I got it right on AP3X
-sorry if it's not the same
Which process occurs during the growth and development of a fertilized human egg?
(1) cell division
(2) natural selection
(3) germination
(4) evolution
Answer:
cell division
Explanation:
Answer:
option A
Explanation:
option A is the correct answer.
as for the growth and development of the fertilized egg zygote which is a single cell it divides and form new cells and became embryo and foetus later on .
hope this will be helpful to you.
plz mark my answer as brainlist plzzzz.
Should water (H2O) be included in the model as a reactant or product? If so, how should it be included?
Yes, as reactant A.
Yes, as reactant A.
Yes, as product B.
Yes, as product B.
Yes, as reactant C.
Yes, as reactant C.
No, it should not be Included.
Answer: A.) Yes, as reactant A.
Explanation: I hope this helps !!
Please hurry it’s timed
Answer:
B) Nucleotide
Answer:
Nucleotide
Explanation:
The entire thing is called a nucleotide, the other answers are parts of a nucleotide.
Please help!! Due today
Click picture to make bigger thank you :)
Answer:
B. The mechanism the organism uses to obtain energy
Explanation:
I really focused on the question it aske me
Answer:
C. the way the organism transfers to the offspring
Explanation:
Show different life cycle patterns with the help of near labelled diagram
Answer:
The life cycles of all sexually reproducing plants follow a pattern of alternation between a haploid, sexual generation called gametophyte with a diploid, asexual generation called sporophyte.
This phenomenon of alternation between gametophyte (n) and sporophyte (2n) in the life cycle of a plant is called alternation of generations (Hofmeister, 1851).
Alternation of generations is of two types- isomorphic and heteromorphy. In isomorphic (or homologous) type both the alternating generations are morphologically similar, while in heteromophic (or heterologous) type of alternation of generations both the generations of life cycle are morphologically dissimilar.
Explanation:
Some ___ fungi can be eaten , but there are also some that are harmful to plant life like wheat rust .
A) Zygote forming
B) Sac
C) Imperfect
D) Club
E) Chytrid
right answers only pls
ill give brainliest or wtv its called
Answer:
hi there!!
Explanation:
It is gaining water because it is growing.
Which choice describes a strategy used to help restore cod populations?
limit the size of fishing fleets and catches
restrict fishing to trawling nets
allow fishermen to harvest from protected areas when necessary
harvest only very young fish
Answer: Limit the size of fishing fleets and catch size.
Explanation: Cod are nearly extinct therefore we either need to stop catching them or limit the amount you catch
The choice describes a strategy used to help restore cod populations is limiting the size of fishing fleets and catches. The correct option is A.
What are cod populations?Atlantic cod, a fish that was essential to New England's economy, is being fished at historically low levels, and New England cod appears to be recovering from overfishing after many years.
Many people are concerned about eating fish because the IUCN has recently classified species including cod, haddock, and grouper as endangered. The fish that are linked to high bycatch rates are another worry for divers. Animals like dolphins and turtles are accidentally killed in the nets at this location.
Therefore, the correct option is A. limit the size of fishing fleets and catches.
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Which gas is removed from the atmosphere during photosynthesis?
A. hydrogen
B. oxygen
C. nitrogen
D. carbon dioxide
Answer:
D. carbon dioxide 21
Explanation:
A. hydrogen 21!
Answer:
D
Explanation:
plants take carbon dioxide in and release oxygen
how the scientist evolve?
Your own word
Answer:
Evolution is a consequence of the interaction of four factors: (1) the potential for a species to increase in number, (2) the genetic variation of individuals in a species due to mutation and sexual reproduction
Match the feature with its description.
HELP!! ASAP
Answer:
In order:
Stalactities
Stalagmites
Swallowhole
Sinkhole
The correct match of the features are:
Stalactites: Grow toward the cave floor.
Stalagmites: Grow toward the cave ceiling.
Swallow hole: A cave that has collapsed because of gravity.
Sinkhole: Where a stream disappears into the ground.
What are Stalactites?Mineral deposits known as stalagmites and stalactites are frequently seen in caves. The pointy, downward-pointing minerals that fall from the caves' roofs give rise to the stalactites.
On the other hand, stalagmites are created when minerals that fall from the roof are deposited on the ground afterward.
Therefore, the correct options are:
Stalactites: Grow toward the cave floor.Stalagmites: Grow toward the cave ceiling.Swallow hole: A cave that has collapsed because of gravity.Sinkhole: Where a stream disappears into the ground.To learn more about Stalactites, refer to the link:
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